Home / 22,587.20-31,170.38-12,515.55

Finding the Fourth Proportional to 22,587.20, 31,170.38 and 12,515.55

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Solution

The fourth proportional to 22,587.20, 31,170.38 and 12,515.55 is: 17,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,587.20 : 31,170.38 = 12,515.55 : x
  2. Step 2: Convert to fraction form
    22,587.20/31,170.38 = 12,515.55/x
  3. Step 3: Cross multiply
    22,587.20x = 31,170.38 × 12,515.55
  4. Step 4: Simplify right side
    22,587.20x = 390,114,386.83
  5. Step 5: Solve for x
    x = 390,114,386.83/22,587.20
  6. Step 6: Final answer
    x = 17,271.48

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Double scale
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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.