Home / 22,515.08-31,070.90-12,306.31

Finding the Fourth Proportional to 22,515.08, 31,070.90 and 12,306.31

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Solution

The fourth proportional to 22,515.08, 31,070.90 and 12,306.31 is: 16,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.08 : 31,070.90 = 12,306.31 : x
  2. Step 2: Convert to fraction form
    22,515.08/31,070.90 = 12,306.31/x
  3. Step 3: Cross multiply
    22,515.08x = 31,070.90 × 12,306.31
  4. Step 4: Simplify right side
    22,515.08x = 382,367,988.17
  5. Step 5: Solve for x
    x = 382,367,988.17/22,515.08
  6. Step 6: Final answer
    x = 16,982.75

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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.