Home / 15,439.46-21,306.39-8,365.91

Finding the Fourth Proportional to 15,439.46, 21,306.39 and 8,365.91

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Solution

The fourth proportional to 15,439.46, 21,306.39 and 8,365.91 is: 11,544.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.46 : 21,306.39 = 8,365.91 : x
  2. Step 2: Convert to fraction form
    15,439.46/21,306.39 = 8,365.91/x
  3. Step 3: Cross multiply
    15,439.46x = 21,306.39 × 8,365.91
  4. Step 4: Simplify right side
    15,439.46x = 178,247,341.16
  5. Step 5: Solve for x
    x = 178,247,341.16/15,439.46
  6. Step 6: Final answer
    x = 11,544.92

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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.