Home / 12,318.50-18,477.75-5,393.02

Finding the Fourth Proportional to 12,318.50, 18,477.75 and 5,393.02

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Solution

The fourth proportional to 12,318.50, 18,477.75 and 5,393.02 is: 8,089.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.50 : 18,477.75 = 5,393.02 : x
  2. Step 2: Convert to fraction form
    12,318.50/18,477.75 = 5,393.02/x
  3. Step 3: Cross multiply
    12,318.50x = 18,477.75 × 5,393.02
  4. Step 4: Simplify right side
    12,318.50x = 99,650,875.31
  5. Step 5: Solve for x
    x = 99,650,875.31/12,318.50
  6. Step 6: Final answer
    x = 8,089.53

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.