Home / 21,261.60-29,337.60-12,307.36

Finding the Fourth Proportional to 21,261.60, 29,337.60 and 12,307.36

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Solution

The fourth proportional to 21,261.60, 29,337.60 and 12,307.36 is: 16,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.60 : 29,337.60 = 12,307.36 : x
  2. Step 2: Convert to fraction form
    21,261.60/29,337.60 = 12,307.36/x
  3. Step 3: Cross multiply
    21,261.60x = 29,337.60 × 12,307.36
  4. Step 4: Simplify right side
    21,261.60x = 361,068,404.74
  5. Step 5: Solve for x
    x = 361,068,404.74/21,261.60
  6. Step 6: Final answer
    x = 16,982.18

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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.