Home / 12,000.28-18,000.15-5,424.70

Finding the Fourth Proportional to 12,000.28, 18,000.15 and 5,424.70

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Solution

The fourth proportional to 12,000.28, 18,000.15 and 5,424.70 is: 8,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.28 : 18,000.15 = 5,424.70 : x
  2. Step 2: Convert to fraction form
    12,000.28/18,000.15 = 5,424.70/x
  3. Step 3: Cross multiply
    12,000.28x = 18,000.15 × 5,424.70
  4. Step 4: Simplify right side
    12,000.28x = 97,645,413.71
  5. Step 5: Solve for x
    x = 97,645,413.71/12,000.28
  6. Step 6: Final answer
    x = 8,136.93

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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.