Home / 15,460.88-21,336.01-8,387.30

Finding the Fourth Proportional to 15,460.88, 21,336.01 and 8,387.30

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Solution

The fourth proportional to 15,460.88, 21,336.01 and 8,387.30 is: 11,574.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.88 : 21,336.01 = 8,387.30 : x
  2. Step 2: Convert to fraction form
    15,460.88/21,336.01 = 8,387.30/x
  3. Step 3: Cross multiply
    15,460.88x = 21,336.01 × 8,387.30
  4. Step 4: Simplify right side
    15,460.88x = 178,951,429.03
  5. Step 5: Solve for x
    x = 178,951,429.03/15,460.88
  6. Step 6: Final answer
    x = 11,574.47

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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.