Home / 15,854.54-21,877.29-8,781.01

Finding the Fourth Proportional to 15,854.54, 21,877.29 and 8,781.01

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Solution

The fourth proportional to 15,854.54, 21,877.29 and 8,781.01 is: 12,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,854.54 : 21,877.29 = 8,781.01 : x
  2. Step 2: Convert to fraction form
    15,854.54/21,877.29 = 8,781.01/x
  3. Step 3: Cross multiply
    15,854.54x = 21,877.29 × 8,781.01
  4. Step 4: Simplify right side
    15,854.54x = 192,104,647.57
  5. Step 5: Solve for x
    x = 192,104,647.57/15,854.54
  6. Step 6: Final answer
    x = 12,116.70

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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.