Home / 31,008.93-42,787.13-18,264.65

Finding the Fourth Proportional to 31,008.93, 42,787.13 and 18,264.65

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Solution

The fourth proportional to 31,008.93, 42,787.13 and 18,264.65 is: 25,202.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.93 : 42,787.13 = 18,264.65 : x
  2. Step 2: Convert to fraction form
    31,008.93/42,787.13 = 18,264.65/x
  3. Step 3: Cross multiply
    31,008.93x = 42,787.13 × 18,264.65
  4. Step 4: Simplify right side
    31,008.93x = 781,492,106.58
  5. Step 5: Solve for x
    x = 781,492,106.58/31,008.93
  6. Step 6: Final answer
    x = 25,202.16

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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.