Home / 15,321.45-22,988.81-6,439.10

Finding the Fourth Proportional to 15,321.45, 22,988.81 and 6,439.10

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Solution

The fourth proportional to 15,321.45, 22,988.81 and 6,439.10 is: 9,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.45 : 22,988.81 = 6,439.10 : x
  2. Step 2: Convert to fraction form
    15,321.45/22,988.81 = 6,439.10/x
  3. Step 3: Cross multiply
    15,321.45x = 22,988.81 × 6,439.10
  4. Step 4: Simplify right side
    15,321.45x = 148,027,147.62
  5. Step 5: Solve for x
    x = 148,027,147.62/15,321.45
  6. Step 6: Final answer
    x = 9,661.43

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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.