Home / 39,431.17-54,415.10-21,526.18

Finding the Fourth Proportional to 39,431.17, 54,415.10 and 21,526.18

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Solution

The fourth proportional to 39,431.17, 54,415.10 and 21,526.18 is: 29,706.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.17 : 54,415.10 = 21,526.18 : x
  2. Step 2: Convert to fraction form
    39,431.17/54,415.10 = 21,526.18/x
  3. Step 3: Cross multiply
    39,431.17x = 54,415.10 × 21,526.18
  4. Step 4: Simplify right side
    39,431.17x = 1,171,348,857.61
  5. Step 5: Solve for x
    x = 1,171,348,857.61/39,431.17
  6. Step 6: Final answer
    x = 29,706.17

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Half scale
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Double scale
Find fourth proportional to 39,432.17, 54,416.48 and 21,527.18
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.