Home / 18,128.40-27,148.80-10,313.52

Finding the Fourth Proportional to 18,128.40, 27,148.80 and 10,313.52

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Solution

The fourth proportional to 18,128.40, 27,148.80 and 10,313.52 is: 15,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.40 : 27,148.80 = 10,313.52 : x
  2. Step 2: Convert to fraction form
    18,128.40/27,148.80 = 10,313.52/x
  3. Step 3: Cross multiply
    18,128.40x = 27,148.80 × 10,313.52
  4. Step 4: Simplify right side
    18,128.40x = 279,999,691.78
  5. Step 5: Solve for x
    x = 279,999,691.78/18,128.40
  6. Step 6: Final answer
    x = 15,445.36

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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.