Home / 21,654.17-29,880.60-12,220.91

Finding the Fourth Proportional to 21,654.17, 29,880.60 and 12,220.91

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Solution

The fourth proportional to 21,654.17, 29,880.60 and 12,220.91 is: 16,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.17 : 29,880.60 = 12,220.91 : x
  2. Step 2: Convert to fraction form
    21,654.17/29,880.60 = 12,220.91/x
  3. Step 3: Cross multiply
    21,654.17x = 29,880.60 × 12,220.91
  4. Step 4: Simplify right side
    21,654.17x = 365,168,123.35
  5. Step 5: Solve for x
    x = 365,168,123.35/21,654.17
  6. Step 6: Final answer
    x = 16,863.64

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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.