Home / 21,607.80-29,818.76-12,176.70

Finding the Fourth Proportional to 21,607.80, 29,818.76 and 12,176.70

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Solution

The fourth proportional to 21,607.80, 29,818.76 and 12,176.70 is: 16,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.80 : 29,818.76 = 12,176.70 : x
  2. Step 2: Convert to fraction form
    21,607.80/29,818.76 = 12,176.70/x
  3. Step 3: Cross multiply
    21,607.80x = 29,818.76 × 12,176.70
  4. Step 4: Simplify right side
    21,607.80x = 363,093,945.80
  5. Step 5: Solve for x
    x = 363,093,945.80/21,607.80
  6. Step 6: Final answer
    x = 16,803.84

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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.