Home / 15,781.24-21,768.92-10,113.98

Finding the Fourth Proportional to 15,781.24, 21,768.92 and 10,113.98

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Solution

The fourth proportional to 15,781.24, 21,768.92 and 10,113.98 is: 13,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.24 : 21,768.92 = 10,113.98 : x
  2. Step 2: Convert to fraction form
    15,781.24/21,768.92 = 10,113.98/x
  3. Step 3: Cross multiply
    15,781.24x = 21,768.92 × 10,113.98
  4. Step 4: Simplify right side
    15,781.24x = 220,170,337.94
  5. Step 5: Solve for x
    x = 220,170,337.94/15,781.24
  6. Step 6: Final answer
    x = 13,951.40

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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.