Home / 28,462.30-42,703.06-17,920.04

Finding the Fourth Proportional to 28,462.30, 42,703.06 and 17,920.04

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Solution

The fourth proportional to 28,462.30, 42,703.06 and 17,920.04 is: 26,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.30 : 42,703.06 = 17,920.04 : x
  2. Step 2: Convert to fraction form
    28,462.30/42,703.06 = 17,920.04/x
  3. Step 3: Cross multiply
    28,462.30x = 42,703.06 × 17,920.04
  4. Step 4: Simplify right side
    28,462.30x = 765,240,543.32
  5. Step 5: Solve for x
    x = 765,240,543.32/28,462.30
  6. Step 6: Final answer
    x = 26,886.11

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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.