Home / 31,576.32-47,332.80-20,490.24

Finding the Fourth Proportional to 31,576.32, 47,332.80 and 20,490.24

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Solution

The fourth proportional to 31,576.32, 47,332.80 and 20,490.24 is: 30,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,576.32 : 47,332.80 = 20,490.24 : x
  2. Step 2: Convert to fraction form
    31,576.32/47,332.80 = 20,490.24/x
  3. Step 3: Cross multiply
    31,576.32x = 47,332.80 × 20,490.24
  4. Step 4: Simplify right side
    31,576.32x = 969,860,431.87
  5. Step 5: Solve for x
    x = 969,860,431.87/31,576.32
  6. Step 6: Final answer
    x = 30,714.80

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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.