Home / 28,488.15-42,732.51-18,689.58

Finding the Fourth Proportional to 28,488.15, 42,732.51 and 18,689.58

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Solution

The fourth proportional to 28,488.15, 42,732.51 and 18,689.58 is: 28,034.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.15 : 42,732.51 = 18,689.58 : x
  2. Step 2: Convert to fraction form
    28,488.15/42,732.51 = 18,689.58/x
  3. Step 3: Cross multiply
    28,488.15x = 42,732.51 × 18,689.58
  4. Step 4: Simplify right side
    28,488.15x = 798,652,664.25
  5. Step 5: Solve for x
    x = 798,652,664.25/28,488.15
  6. Step 6: Final answer
    x = 28,034.56

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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.