Home / 15,402.83-21,254.31-11,371.80

Finding the Fourth Proportional to 15,402.83, 21,254.31 and 11,371.80

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Solution

The fourth proportional to 15,402.83, 21,254.31 and 11,371.80 is: 15,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.83 : 21,254.31 = 11,371.80 : x
  2. Step 2: Convert to fraction form
    15,402.83/21,254.31 = 11,371.80/x
  3. Step 3: Cross multiply
    15,402.83x = 21,254.31 × 11,371.80
  4. Step 4: Simplify right side
    15,402.83x = 241,699,762.46
  5. Step 5: Solve for x
    x = 241,699,762.46/15,402.83
  6. Step 6: Final answer
    x = 15,691.91

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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.