Home / 15,439.66-21,306.16-8,365.93

Finding the Fourth Proportional to 15,439.66, 21,306.16 and 8,365.93

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Solution

The fourth proportional to 15,439.66, 21,306.16 and 8,365.93 is: 11,544.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.66 : 21,306.16 = 8,365.93 : x
  2. Step 2: Convert to fraction form
    15,439.66/21,306.16 = 8,365.93/x
  3. Step 3: Cross multiply
    15,439.66x = 21,306.16 × 8,365.93
  4. Step 4: Simplify right side
    15,439.66x = 178,245,943.70
  5. Step 5: Solve for x
    x = 178,245,943.70/15,439.66
  6. Step 6: Final answer
    x = 11,544.68

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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.