Home / 10,621.40-15,932.10-6,730.20

Finding the Fourth Proportional to 10,621.40, 15,932.10 and 6,730.20

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Solution

The fourth proportional to 10,621.40, 15,932.10 and 6,730.20 is: 10,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.40 : 15,932.10 = 6,730.20 : x
  2. Step 2: Convert to fraction form
    10,621.40/15,932.10 = 6,730.20/x
  3. Step 3: Cross multiply
    10,621.40x = 15,932.10 × 6,730.20
  4. Step 4: Simplify right side
    10,621.40x = 107,226,219.42
  5. Step 5: Solve for x
    x = 107,226,219.42/10,621.40
  6. Step 6: Final answer
    x = 10,095.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.