Home / 20,702.16-28,562.76-18,706.32

Finding the Fourth Proportional to 20,702.16, 28,562.76 and 18,706.32

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Solution

The fourth proportional to 20,702.16, 28,562.76 and 18,706.32 is: 25,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.16 : 28,562.76 = 18,706.32 : x
  2. Step 2: Convert to fraction form
    20,702.16/28,562.76 = 18,706.32/x
  3. Step 3: Cross multiply
    20,702.16x = 28,562.76 × 18,706.32
  4. Step 4: Simplify right side
    20,702.16x = 534,304,128.64
  5. Step 5: Solve for x
    x = 534,304,128.64/20,702.16
  6. Step 6: Final answer
    x = 25,809.10

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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.