Home / 38,691.03-53,399.60-21,702.15

Finding the Fourth Proportional to 38,691.03, 53,399.60 and 21,702.15

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Solution

The fourth proportional to 38,691.03, 53,399.60 and 21,702.15 is: 29,952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,691.03 : 53,399.60 = 21,702.15 : x
  2. Step 2: Convert to fraction form
    38,691.03/53,399.60 = 21,702.15/x
  3. Step 3: Cross multiply
    38,691.03x = 53,399.60 × 21,702.15
  4. Step 4: Simplify right side
    38,691.03x = 1,158,886,020.63
  5. Step 5: Solve for x
    x = 1,158,886,020.63/38,691.03
  6. Step 6: Final answer
    x = 29,952.32

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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.