Home / 19,939.53-29,909.34-18,721.65

Finding the Fourth Proportional to 19,939.53, 29,909.34 and 18,721.65

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Solution

The fourth proportional to 19,939.53, 29,909.34 and 18,721.65 is: 28,082.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.53 : 29,909.34 = 18,721.65 : x
  2. Step 2: Convert to fraction form
    19,939.53/29,909.34 = 18,721.65/x
  3. Step 3: Cross multiply
    19,939.53x = 29,909.34 × 18,721.65
  4. Step 4: Simplify right side
    19,939.53x = 559,952,195.21
  5. Step 5: Solve for x
    x = 559,952,195.21/19,939.53
  6. Step 6: Final answer
    x = 28,082.52

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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.