Home / 21,607.30-29,818.07-12,176.20

Finding the Fourth Proportional to 21,607.30, 29,818.07 and 12,176.20

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Solution

The fourth proportional to 21,607.30, 29,818.07 and 12,176.20 is: 16,803.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.30 : 29,818.07 = 12,176.20 : x
  2. Step 2: Convert to fraction form
    21,607.30/29,818.07 = 12,176.20/x
  3. Step 3: Cross multiply
    21,607.30x = 29,818.07 × 12,176.20
  4. Step 4: Simplify right side
    21,607.30x = 363,070,634.84
  5. Step 5: Solve for x
    x = 363,070,634.84/21,607.30
  6. Step 6: Final answer
    x = 16,803.15

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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.