Home / 18,139.48-25,023.54-11,417.56

Finding the Fourth Proportional to 18,139.48, 25,023.54 and 11,417.56

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Solution

The fourth proportional to 18,139.48, 25,023.54 and 11,417.56 is: 15,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.48 : 25,023.54 = 11,417.56 : x
  2. Step 2: Convert to fraction form
    18,139.48/25,023.54 = 11,417.56/x
  3. Step 3: Cross multiply
    18,139.48x = 25,023.54 × 11,417.56
  4. Step 4: Simplify right side
    18,139.48x = 285,707,769.36
  5. Step 5: Solve for x
    x = 285,707,769.36/18,139.48
  6. Step 6: Final answer
    x = 15,750.60

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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.