Home / 21,321.04-29,407.17-15,654.01

Finding the Fourth Proportional to 21,321.04, 29,407.17 and 15,654.01

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Solution

The fourth proportional to 21,321.04, 29,407.17 and 15,654.01 is: 21,590.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.04 : 29,407.17 = 15,654.01 : x
  2. Step 2: Convert to fraction form
    21,321.04/29,407.17 = 15,654.01/x
  3. Step 3: Cross multiply
    21,321.04x = 29,407.17 × 15,654.01
  4. Step 4: Simplify right side
    21,321.04x = 460,340,133.25
  5. Step 5: Solve for x
    x = 460,340,133.25/21,321.04
  6. Step 6: Final answer
    x = 21,590.89

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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.