Home / 21,152.60-29,182.85-12,654.96

Finding the Fourth Proportional to 21,152.60, 29,182.85 and 12,654.96

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Solution

The fourth proportional to 21,152.60, 29,182.85 and 12,654.96 is: 17,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.60 : 29,182.85 = 12,654.96 : x
  2. Step 2: Convert to fraction form
    21,152.60/29,182.85 = 12,654.96/x
  3. Step 3: Cross multiply
    21,152.60x = 29,182.85 × 12,654.96
  4. Step 4: Simplify right side
    21,152.60x = 369,307,831.07
  5. Step 5: Solve for x
    x = 369,307,831.07/21,152.60
  6. Step 6: Final answer
    x = 17,459.22

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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.