Home / 18,344.40-25,313.28-10,387.20

Finding the Fourth Proportional to 18,344.40, 25,313.28 and 10,387.20

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Solution

The fourth proportional to 18,344.40, 25,313.28 and 10,387.20 is: 14,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.40 : 25,313.28 = 10,387.20 : x
  2. Step 2: Convert to fraction form
    18,344.40/25,313.28 = 10,387.20/x
  3. Step 3: Cross multiply
    18,344.40x = 25,313.28 × 10,387.20
  4. Step 4: Simplify right side
    18,344.40x = 262,934,102.02
  5. Step 5: Solve for x
    x = 262,934,102.02/18,344.40
  6. Step 6: Final answer
    x = 14,333.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.