Home / 21,174.08-31,702.72-15,964.16

Finding the Fourth Proportional to 21,174.08, 31,702.72 and 15,964.16

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Solution

The fourth proportional to 21,174.08, 31,702.72 and 15,964.16 is: 23,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.08 : 31,702.72 = 15,964.16 : x
  2. Step 2: Convert to fraction form
    21,174.08/31,702.72 = 15,964.16/x
  3. Step 3: Cross multiply
    21,174.08x = 31,702.72 × 15,964.16
  4. Step 4: Simplify right side
    21,174.08x = 506,107,294.52
  5. Step 5: Solve for x
    x = 506,107,294.52/21,174.08
  6. Step 6: Final answer
    x = 23,902.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.