Home / 15,286.65-21,096.59-8,572.71

Finding the Fourth Proportional to 15,286.65, 21,096.59 and 8,572.71

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Solution

The fourth proportional to 15,286.65, 21,096.59 and 8,572.71 is: 11,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.65 : 21,096.59 = 8,572.71 : x
  2. Step 2: Convert to fraction form
    15,286.65/21,096.59 = 8,572.71/x
  3. Step 3: Cross multiply
    15,286.65x = 21,096.59 × 8,572.71
  4. Step 4: Simplify right side
    15,286.65x = 180,854,905.20
  5. Step 5: Solve for x
    x = 180,854,905.20/15,286.65
  6. Step 6: Final answer
    x = 11,830.91

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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.