Home / 21,210.60-29,257.54-13,654.44

Finding the Fourth Proportional to 21,210.60, 29,257.54 and 13,654.44

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Solution

The fourth proportional to 21,210.60, 29,257.54 and 13,654.44 is: 18,834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.60 : 29,257.54 = 13,654.44 : x
  2. Step 2: Convert to fraction form
    21,210.60/29,257.54 = 13,654.44/x
  3. Step 3: Cross multiply
    21,210.60x = 29,257.54 × 13,654.44
  4. Step 4: Simplify right side
    21,210.60x = 399,495,324.48
  5. Step 5: Solve for x
    x = 399,495,324.48/21,210.60
  6. Step 6: Final answer
    x = 18,834.70

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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.