Home / 10,621.38-14,655.86-6,145.55

Finding the Fourth Proportional to 10,621.38, 14,655.86 and 6,145.55

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Solution

The fourth proportional to 10,621.38, 14,655.86 and 6,145.55 is: 8,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.38 : 14,655.86 = 6,145.55 : x
  2. Step 2: Convert to fraction form
    10,621.38/14,655.86 = 6,145.55/x
  3. Step 3: Cross multiply
    10,621.38x = 14,655.86 × 6,145.55
  4. Step 4: Simplify right side
    10,621.38x = 90,068,270.49
  5. Step 5: Solve for x
    x = 90,068,270.49/10,621.38
  6. Step 6: Final answer
    x = 8,479.90

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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.