Home / 20,331.65-28,061.01-13,952.99

Finding the Fourth Proportional to 20,331.65, 28,061.01 and 13,952.99

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Solution

The fourth proportional to 20,331.65, 28,061.01 and 13,952.99 is: 19,257.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.65 : 28,061.01 = 13,952.99 : x
  2. Step 2: Convert to fraction form
    20,331.65/28,061.01 = 13,952.99/x
  3. Step 3: Cross multiply
    20,331.65x = 28,061.01 × 13,952.99
  4. Step 4: Simplify right side
    20,331.65x = 391,534,991.92
  5. Step 5: Solve for x
    x = 391,534,991.92/20,331.65
  6. Step 6: Final answer
    x = 19,257.41

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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.