Home / 12,715.92-19,071-4,395.60

Finding the Fourth Proportional to 12,715.92, 19,071 and 4,395.60

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Solution

The fourth proportional to 12,715.92, 19,071 and 4,395.60 is: 6,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.92 : 19,071 = 4,395.60 : x
  2. Step 2: Convert to fraction form
    12,715.92/19,071 = 4,395.60/x
  3. Step 3: Cross multiply
    12,715.92x = 19,071 × 4,395.60
  4. Step 4: Simplify right side
    12,715.92x = 83,828,487.60
  5. Step 5: Solve for x
    x = 83,828,487.60/12,715.92
  6. Step 6: Final answer
    x = 6,592.40

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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.