Home / 20,377.71-28,098.50-19,561.23

Finding the Fourth Proportional to 20,377.71, 28,098.50 and 19,561.23

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Solution

The fourth proportional to 20,377.71, 28,098.50 and 19,561.23 is: 26,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.71 : 28,098.50 = 19,561.23 : x
  2. Step 2: Convert to fraction form
    20,377.71/28,098.50 = 19,561.23/x
  3. Step 3: Cross multiply
    20,377.71x = 28,098.50 × 19,561.23
  4. Step 4: Simplify right side
    20,377.71x = 549,641,123.35
  5. Step 5: Solve for x
    x = 549,641,123.35/20,377.71
  6. Step 6: Final answer
    x = 26,972.66

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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.