Home / 15,275.40-21,081.28-8,562.52

Finding the Fourth Proportional to 15,275.40, 21,081.28 and 8,562.52

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Solution

The fourth proportional to 15,275.40, 21,081.28 and 8,562.52 is: 11,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.40 : 21,081.28 = 8,562.52 : x
  2. Step 2: Convert to fraction form
    15,275.40/21,081.28 = 8,562.52/x
  3. Step 3: Cross multiply
    15,275.40x = 21,081.28 × 8,562.52
  4. Step 4: Simplify right side
    15,275.40x = 180,508,881.63
  5. Step 5: Solve for x
    x = 180,508,881.63/15,275.40
  6. Step 6: Final answer
    x = 11,816.97

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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.