Home / 31,700.20-47,472.54-21,280.36

Finding the Fourth Proportional to 31,700.20, 47,472.54 and 21,280.36

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Solution

The fourth proportional to 31,700.20, 47,472.54 and 21,280.36 is: 31,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,700.20 : 47,472.54 = 21,280.36 : x
  2. Step 2: Convert to fraction form
    31,700.20/47,472.54 = 21,280.36/x
  3. Step 3: Cross multiply
    31,700.20x = 47,472.54 × 21,280.36
  4. Step 4: Simplify right side
    31,700.20x = 1,010,232,741.31
  5. Step 5: Solve for x
    x = 1,010,232,741.31/31,700.20
  6. Step 6: Final answer
    x = 31,868.34

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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.