Home / 20,070.72-27,702.19-13,356.63

Finding the Fourth Proportional to 20,070.72, 27,702.19 and 13,356.63

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Solution

The fourth proportional to 20,070.72, 27,702.19 and 13,356.63 is: 18,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.72 : 27,702.19 = 13,356.63 : x
  2. Step 2: Convert to fraction form
    20,070.72/27,702.19 = 13,356.63/x
  3. Step 3: Cross multiply
    20,070.72x = 27,702.19 × 13,356.63
  4. Step 4: Simplify right side
    20,070.72x = 370,007,902.02
  5. Step 5: Solve for x
    x = 370,007,902.02/20,070.72
  6. Step 6: Final answer
    x = 18,435.21

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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.