Home / 12,715.28-19,069.28-4,393.12

Finding the Fourth Proportional to 12,715.28, 19,069.28 and 4,393.12

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Solution

The fourth proportional to 12,715.28, 19,069.28 and 4,393.12 is: 6,588.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.28 : 19,069.28 = 4,393.12 : x
  2. Step 2: Convert to fraction form
    12,715.28/19,069.28 = 4,393.12/x
  3. Step 3: Cross multiply
    12,715.28x = 19,069.28 × 4,393.12
  4. Step 4: Simplify right side
    12,715.28x = 83,773,635.35
  5. Step 5: Solve for x
    x = 83,773,635.35/12,715.28
  6. Step 6: Final answer
    x = 6,588.42

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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.