Home / 15,565.29-21,480.08-8,491.73

Finding the Fourth Proportional to 15,565.29, 21,480.08 and 8,491.73

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Solution

The fourth proportional to 15,565.29, 21,480.08 and 8,491.73 is: 11,718.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.29 : 21,480.08 = 8,491.73 : x
  2. Step 2: Convert to fraction form
    15,565.29/21,480.08 = 8,491.73/x
  3. Step 3: Cross multiply
    15,565.29x = 21,480.08 × 8,491.73
  4. Step 4: Simplify right side
    15,565.29x = 182,402,889.88
  5. Step 5: Solve for x
    x = 182,402,889.88/15,565.29
  6. Step 6: Final answer
    x = 11,718.57

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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.