Home / 15,486.98-21,380.90-10,197.18

Finding the Fourth Proportional to 15,486.98, 21,380.90 and 10,197.18

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Solution

The fourth proportional to 15,486.98, 21,380.90 and 10,197.18 is: 14,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.98 : 21,380.90 = 10,197.18 : x
  2. Step 2: Convert to fraction form
    15,486.98/21,380.90 = 10,197.18/x
  3. Step 3: Cross multiply
    15,486.98x = 21,380.90 × 10,197.18
  4. Step 4: Simplify right side
    15,486.98x = 218,024,885.86
  5. Step 5: Solve for x
    x = 218,024,885.86/15,486.98
  6. Step 6: Final answer
    x = 14,077.95

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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.