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Finding the Fourth Proportional to 39,981, 59,972.94 and 15,018.42

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Solution

The fourth proportional to 39,981, 59,972.94 and 15,018.42 is: 22,528.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981 : 59,972.94 = 15,018.42 : x
  2. Step 2: Convert to fraction form
    39,981/59,972.94 = 15,018.42/x
  3. Step 3: Cross multiply
    39,981x = 59,972.94 × 15,018.42
  4. Step 4: Simplify right side
    39,981x = 900,698,801.55
  5. Step 5: Solve for x
    x = 900,698,801.55/39,981
  6. Step 6: Final answer
    x = 22,528.17

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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.