Home / 12,885.16-19,330.14-4,122.28

Finding the Fourth Proportional to 12,885.16, 19,330.14 and 4,122.28

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Solution

The fourth proportional to 12,885.16, 19,330.14 and 4,122.28 is: 6,184.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.16 : 19,330.14 = 4,122.28 : x
  2. Step 2: Convert to fraction form
    12,885.16/19,330.14 = 4,122.28/x
  3. Step 3: Cross multiply
    12,885.16x = 19,330.14 × 4,122.28
  4. Step 4: Simplify right side
    12,885.16x = 79,684,249.52
  5. Step 5: Solve for x
    x = 79,684,249.52/12,885.16
  6. Step 6: Final answer
    x = 6,184.19

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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.