Home / 21,397.13-29,518.08-13,845.89

Finding the Fourth Proportional to 21,397.13, 29,518.08 and 13,845.89

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Solution

The fourth proportional to 21,397.13, 29,518.08 and 13,845.89 is: 19,100.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.13 : 29,518.08 = 13,845.89 : x
  2. Step 2: Convert to fraction form
    21,397.13/29,518.08 = 13,845.89/x
  3. Step 3: Cross multiply
    21,397.13x = 29,518.08 × 13,845.89
  4. Step 4: Simplify right side
    21,397.13x = 408,703,941.10
  5. Step 5: Solve for x
    x = 408,703,941.10/21,397.13
  6. Step 6: Final answer
    x = 19,100.88

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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.