Home / 10,247.10-15,334.20-7,112.40

Finding the Fourth Proportional to 10,247.10, 15,334.20 and 7,112.40

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Solution

The fourth proportional to 10,247.10, 15,334.20 and 7,112.40 is: 10,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,247.10 : 15,334.20 = 7,112.40 : x
  2. Step 2: Convert to fraction form
    10,247.10/15,334.20 = 7,112.40/x
  3. Step 3: Cross multiply
    10,247.10x = 15,334.20 × 7,112.40
  4. Step 4: Simplify right side
    10,247.10x = 109,062,964.08
  5. Step 5: Solve for x
    x = 109,062,964.08/10,247.10
  6. Step 6: Final answer
    x = 10,643.30

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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.