Home / 31,812.40-47,677.80-17,772.40

Finding the Fourth Proportional to 31,812.40, 47,677.80 and 17,772.40

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Solution

The fourth proportional to 31,812.40, 47,677.80 and 17,772.40 is: 26,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,812.40 : 47,677.80 = 17,772.40 : x
  2. Step 2: Convert to fraction form
    31,812.40/47,677.80 = 17,772.40/x
  3. Step 3: Cross multiply
    31,812.40x = 47,677.80 × 17,772.40
  4. Step 4: Simplify right side
    31,812.40x = 847,348,932.72
  5. Step 5: Solve for x
    x = 847,348,932.72/31,812.40
  6. Step 6: Final answer
    x = 26,635.81

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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.