Home / 18,358.86-25,335.18-9,975.36

Finding the Fourth Proportional to 18,358.86, 25,335.18 and 9,975.36

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Solution

The fourth proportional to 18,358.86, 25,335.18 and 9,975.36 is: 13,765.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.86 : 25,335.18 = 9,975.36 : x
  2. Step 2: Convert to fraction form
    18,358.86/25,335.18 = 9,975.36/x
  3. Step 3: Cross multiply
    18,358.86x = 25,335.18 × 9,975.36
  4. Step 4: Simplify right side
    18,358.86x = 252,727,541.16
  5. Step 5: Solve for x
    x = 252,727,541.16/18,358.86
  6. Step 6: Final answer
    x = 13,765.97

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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.