Home / 31,988.02-47,961.50-13,280.97

Finding the Fourth Proportional to 31,988.02, 47,961.50 and 13,280.97

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Solution

The fourth proportional to 31,988.02, 47,961.50 and 13,280.97 is: 19,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.02 : 47,961.50 = 13,280.97 : x
  2. Step 2: Convert to fraction form
    31,988.02/47,961.50 = 13,280.97/x
  3. Step 3: Cross multiply
    31,988.02x = 47,961.50 × 13,280.97
  4. Step 4: Simplify right side
    31,988.02x = 636,975,161.03
  5. Step 5: Solve for x
    x = 636,975,161.03/31,988.02
  6. Step 6: Final answer
    x = 19,912.93

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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.