Home / 31,572.18-47,326.28-20,485.91

Finding the Fourth Proportional to 31,572.18, 47,326.28 and 20,485.91

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Solution

The fourth proportional to 31,572.18, 47,326.28 and 20,485.91 is: 30,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,572.18 : 47,326.28 = 20,485.91 : x
  2. Step 2: Convert to fraction form
    31,572.18/47,326.28 = 20,485.91/x
  3. Step 3: Cross multiply
    31,572.18x = 47,326.28 × 20,485.91
  4. Step 4: Simplify right side
    31,572.18x = 969,521,928.60
  5. Step 5: Solve for x
    x = 969,521,928.60/31,572.18
  6. Step 6: Final answer
    x = 30,708.11

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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.