Home / 30,972.43-42,752.01-18,224.92

Finding the Fourth Proportional to 30,972.43, 42,752.01 and 18,224.92

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Solution

The fourth proportional to 30,972.43, 42,752.01 and 18,224.92 is: 25,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.43 : 42,752.01 = 18,224.92 : x
  2. Step 2: Convert to fraction form
    30,972.43/42,752.01 = 18,224.92/x
  3. Step 3: Cross multiply
    30,972.43x = 42,752.01 × 18,224.92
  4. Step 4: Simplify right side
    30,972.43x = 779,151,962.09
  5. Step 5: Solve for x
    x = 779,151,962.09/30,972.43
  6. Step 6: Final answer
    x = 25,156.31

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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.