Home / 20,335.36-28,061.50-11,381.35

Finding the Fourth Proportional to 20,335.36, 28,061.50 and 11,381.35

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Solution

The fourth proportional to 20,335.36, 28,061.50 and 11,381.35 is: 15,705.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.36 : 28,061.50 = 11,381.35 : x
  2. Step 2: Convert to fraction form
    20,335.36/28,061.50 = 11,381.35/x
  3. Step 3: Cross multiply
    20,335.36x = 28,061.50 × 11,381.35
  4. Step 4: Simplify right side
    20,335.36x = 319,377,753.03
  5. Step 5: Solve for x
    x = 319,377,753.03/20,335.36
  6. Step 6: Final answer
    x = 15,705.54

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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.