Home / 31,653.52-47,431-28,348.56

Finding the Fourth Proportional to 31,653.52, 47,431 and 28,348.56

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Solution

The fourth proportional to 31,653.52, 47,431 and 28,348.56 is: 42,478.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,653.52 : 47,431 = 28,348.56 : x
  2. Step 2: Convert to fraction form
    31,653.52/47,431 = 28,348.56/x
  3. Step 3: Cross multiply
    31,653.52x = 47,431 × 28,348.56
  4. Step 4: Simplify right side
    31,653.52x = 1,344,600,549.36
  5. Step 5: Solve for x
    x = 1,344,600,549.36/31,653.52
  6. Step 6: Final answer
    x = 42,478.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.