Home / 10,621.13-14,660.80-6,429.38

Finding the Fourth Proportional to 10,621.13, 14,660.80 and 6,429.38

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Solution

The fourth proportional to 10,621.13, 14,660.80 and 6,429.38 is: 8,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.13 : 14,660.80 = 6,429.38 : x
  2. Step 2: Convert to fraction form
    10,621.13/14,660.80 = 6,429.38/x
  3. Step 3: Cross multiply
    10,621.13x = 14,660.80 × 6,429.38
  4. Step 4: Simplify right side
    10,621.13x = 94,259,764.93
  5. Step 5: Solve for x
    x = 94,259,764.93/10,621.13
  6. Step 6: Final answer
    x = 8,874.74

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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.