Home / 15,534.20-21,437.20-8,460.62

Finding the Fourth Proportional to 15,534.20, 21,437.20 and 8,460.62

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Solution

The fourth proportional to 15,534.20, 21,437.20 and 8,460.62 is: 11,675.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.20 : 21,437.20 = 8,460.62 : x
  2. Step 2: Convert to fraction form
    15,534.20/21,437.20 = 8,460.62/x
  3. Step 3: Cross multiply
    15,534.20x = 21,437.20 × 8,460.62
  4. Step 4: Simplify right side
    15,534.20x = 181,372,059.84
  5. Step 5: Solve for x
    x = 181,372,059.84/15,534.20
  6. Step 6: Final answer
    x = 11,675.66

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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.