Home / 21,397.15-32,139.47-17,455.08

Finding the Fourth Proportional to 21,397.15, 32,139.47 and 17,455.08

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Solution

The fourth proportional to 21,397.15, 32,139.47 and 17,455.08 is: 26,218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.15 : 32,139.47 = 17,455.08 : x
  2. Step 2: Convert to fraction form
    21,397.15/32,139.47 = 17,455.08/x
  3. Step 3: Cross multiply
    21,397.15x = 32,139.47 × 17,455.08
  4. Step 4: Simplify right side
    21,397.15x = 560,997,020.01
  5. Step 5: Solve for x
    x = 560,997,020.01/21,397.15
  6. Step 6: Final answer
    x = 26,218.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.