Home / 13,243.28-18,276.12-7,275.32

Finding the Fourth Proportional to 13,243.28, 18,276.12 and 7,275.32

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Solution

The fourth proportional to 13,243.28, 18,276.12 and 7,275.32 is: 10,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.28 : 18,276.12 = 7,275.32 : x
  2. Step 2: Convert to fraction form
    13,243.28/18,276.12 = 7,275.32/x
  3. Step 3: Cross multiply
    13,243.28x = 18,276.12 × 7,275.32
  4. Step 4: Simplify right side
    13,243.28x = 132,964,621.36
  5. Step 5: Solve for x
    x = 132,964,621.36/13,243.28
  6. Step 6: Final answer
    x = 10,040.16

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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.