Home / 28,328.64-42,498.04-11,679.40

Finding the Fourth Proportional to 28,328.64, 42,498.04 and 11,679.40

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Solution

The fourth proportional to 28,328.64, 42,498.04 and 11,679.40 is: 17,521.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.64 : 42,498.04 = 11,679.40 : x
  2. Step 2: Convert to fraction form
    28,328.64/42,498.04 = 11,679.40/x
  3. Step 3: Cross multiply
    28,328.64x = 42,498.04 × 11,679.40
  4. Step 4: Simplify right side
    28,328.64x = 496,351,608.38
  5. Step 5: Solve for x
    x = 496,351,608.38/28,328.64
  6. Step 6: Final answer
    x = 17,521.19

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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.