Home / 12,338.28-18,492.30-6,491.16

Finding the Fourth Proportional to 12,338.28, 18,492.30 and 6,491.16

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Solution

The fourth proportional to 12,338.28, 18,492.30 and 6,491.16 is: 9,728.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.28 : 18,492.30 = 6,491.16 : x
  2. Step 2: Convert to fraction form
    12,338.28/18,492.30 = 6,491.16/x
  3. Step 3: Cross multiply
    12,338.28x = 18,492.30 × 6,491.16
  4. Step 4: Simplify right side
    12,338.28x = 120,036,478.07
  5. Step 5: Solve for x
    x = 120,036,478.07/12,338.28
  6. Step 6: Final answer
    x = 9,728.79

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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.