Home / 13,439.09-20,056.98-13,089.17

Finding the Fourth Proportional to 13,439.09, 20,056.98 and 13,089.17

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Solution

The fourth proportional to 13,439.09, 20,056.98 and 13,089.17 is: 19,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.09 : 20,056.98 = 13,089.17 : x
  2. Step 2: Convert to fraction form
    13,439.09/20,056.98 = 13,089.17/x
  3. Step 3: Cross multiply
    13,439.09x = 20,056.98 × 13,089.17
  4. Step 4: Simplify right side
    13,439.09x = 262,529,120.62
  5. Step 5: Solve for x
    x = 262,529,120.62/13,439.09
  6. Step 6: Final answer
    x = 19,534.75

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Half scale
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Double scale
Find fourth proportional to 13,440.09, 20,058.47 and 13,090.17
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.