Home / 31,987.57-47,987.51-12,264.59

Finding the Fourth Proportional to 31,987.57, 47,987.51 and 12,264.59

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Solution

The fourth proportional to 31,987.57, 47,987.51 and 12,264.59 is: 18,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,987.57 : 47,987.51 = 12,264.59 : x
  2. Step 2: Convert to fraction form
    31,987.57/47,987.51 = 12,264.59/x
  3. Step 3: Cross multiply
    31,987.57x = 47,987.51 × 12,264.59
  4. Step 4: Simplify right side
    31,987.57x = 588,547,330.89
  5. Step 5: Solve for x
    x = 588,547,330.89/31,987.57
  6. Step 6: Final answer
    x = 18,399.25

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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.