Home / 15,460.68-21,335.76-8,387.12

Finding the Fourth Proportional to 15,460.68, 21,335.76 and 8,387.12

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Solution

The fourth proportional to 15,460.68, 21,335.76 and 8,387.12 is: 11,574.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.68 : 21,335.76 = 8,387.12 : x
  2. Step 2: Convert to fraction form
    15,460.68/21,335.76 = 8,387.12/x
  3. Step 3: Cross multiply
    15,460.68x = 21,335.76 × 8,387.12
  4. Step 4: Simplify right side
    15,460.68x = 178,945,579.41
  5. Step 5: Solve for x
    x = 178,945,579.41/15,460.68
  6. Step 6: Final answer
    x = 11,574.24

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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.