Home / 20,702.48-28,569.68-11,271.04

Finding the Fourth Proportional to 20,702.48, 28,569.68 and 11,271.04

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Solution

The fourth proportional to 20,702.48, 28,569.68 and 11,271.04 is: 15,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.48 : 28,569.68 = 11,271.04 : x
  2. Step 2: Convert to fraction form
    20,702.48/28,569.68 = 11,271.04/x
  3. Step 3: Cross multiply
    20,702.48x = 28,569.68 × 11,271.04
  4. Step 4: Simplify right side
    20,702.48x = 322,010,006.07
  5. Step 5: Solve for x
    x = 322,010,006.07/20,702.48
  6. Step 6: Final answer
    x = 15,554.18

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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.