Home / 15,534.47-21,437.38-8,820.29

Finding the Fourth Proportional to 15,534.47, 21,437.38 and 8,820.29

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Solution

The fourth proportional to 15,534.47, 21,437.38 and 8,820.29 is: 12,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.47 : 21,437.38 = 8,820.29 : x
  2. Step 2: Convert to fraction form
    15,534.47/21,437.38 = 8,820.29/x
  3. Step 3: Cross multiply
    15,534.47x = 21,437.38 × 8,820.29
  4. Step 4: Simplify right side
    15,534.47x = 189,083,908.44
  5. Step 5: Solve for x
    x = 189,083,908.44/15,534.47
  6. Step 6: Final answer
    x = 12,171.89

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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.