Home / 12,144.71-18,219.53-5,124.75

Finding the Fourth Proportional to 12,144.71, 18,219.53 and 5,124.75

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Solution

The fourth proportional to 12,144.71, 18,219.53 and 5,124.75 is: 7,688.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.71 : 18,219.53 = 5,124.75 : x
  2. Step 2: Convert to fraction form
    12,144.71/18,219.53 = 5,124.75/x
  3. Step 3: Cross multiply
    12,144.71x = 18,219.53 × 5,124.75
  4. Step 4: Simplify right side
    12,144.71x = 93,370,480.86
  5. Step 5: Solve for x
    x = 93,370,480.86/12,144.71
  6. Step 6: Final answer
    x = 7,688.16

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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.