Home / 20,702.19-28,569.02-11,270.75

Finding the Fourth Proportional to 20,702.19, 28,569.02 and 11,270.75

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Solution

The fourth proportional to 20,702.19, 28,569.02 and 11,270.75 is: 15,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.19 : 28,569.02 = 11,270.75 : x
  2. Step 2: Convert to fraction form
    20,702.19/28,569.02 = 11,270.75/x
  3. Step 3: Cross multiply
    20,702.19x = 28,569.02 × 11,270.75
  4. Step 4: Simplify right side
    20,702.19x = 321,994,282.17
  5. Step 5: Solve for x
    x = 321,994,282.17/20,702.19
  6. Step 6: Final answer
    x = 15,553.63

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1.5x scale

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.