Home / 12,722.61-19,082.96-6,478.71

Finding the Fourth Proportional to 12,722.61, 19,082.96 and 6,478.71

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Solution

The fourth proportional to 12,722.61, 19,082.96 and 6,478.71 is: 9,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,722.61 : 19,082.96 = 6,478.71 : x
  2. Step 2: Convert to fraction form
    12,722.61/19,082.96 = 6,478.71/x
  3. Step 3: Cross multiply
    12,722.61x = 19,082.96 × 6,478.71
  4. Step 4: Simplify right side
    12,722.61x = 123,632,931.39
  5. Step 5: Solve for x
    x = 123,632,931.39/12,722.61
  6. Step 6: Final answer
    x = 9,717.58

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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.