Home / 15,781.80-23,672.70-8,855.40

Finding the Fourth Proportional to 15,781.80, 23,672.70 and 8,855.40

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Solution

The fourth proportional to 15,781.80, 23,672.70 and 8,855.40 is: 13,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.80 : 23,672.70 = 8,855.40 : x
  2. Step 2: Convert to fraction form
    15,781.80/23,672.70 = 8,855.40/x
  3. Step 3: Cross multiply
    15,781.80x = 23,672.70 × 8,855.40
  4. Step 4: Simplify right side
    15,781.80x = 209,631,227.58
  5. Step 5: Solve for x
    x = 209,631,227.58/15,781.80
  6. Step 6: Final answer
    x = 13,283.10

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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.