Home / 31,045.97-42,827.18-18,113.51

Finding the Fourth Proportional to 31,045.97, 42,827.18 and 18,113.51

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Solution

The fourth proportional to 31,045.97, 42,827.18 and 18,113.51 is: 24,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,045.97 : 42,827.18 = 18,113.51 : x
  2. Step 2: Convert to fraction form
    31,045.97/42,827.18 = 18,113.51/x
  3. Step 3: Cross multiply
    31,045.97x = 42,827.18 × 18,113.51
  4. Step 4: Simplify right side
    31,045.97x = 775,750,248.50
  5. Step 5: Solve for x
    x = 775,750,248.50/31,045.97
  6. Step 6: Final answer
    x = 24,987.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.