Home / 57,981.36-86,972.85-16,428.36

Finding the Fourth Proportional to 57,981.36, 86,972.85 and 16,428.36

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Solution

The fourth proportional to 57,981.36, 86,972.85 and 16,428.36 is: 24,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.36 : 86,972.85 = 16,428.36 : x
  2. Step 2: Convert to fraction form
    57,981.36/86,972.85 = 16,428.36/x
  3. Step 3: Cross multiply
    57,981.36x = 86,972.85 × 16,428.36
  4. Step 4: Simplify right side
    57,981.36x = 1,428,821,290.03
  5. Step 5: Solve for x
    x = 1,428,821,290.03/57,981.36
  6. Step 6: Final answer
    x = 24,642.77

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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.