Home / 18,295.38-25,247.40-9,911.88

Finding the Fourth Proportional to 18,295.38, 25,247.40 and 9,911.88

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Solution

The fourth proportional to 18,295.38, 25,247.40 and 9,911.88 is: 13,678.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.38 : 25,247.40 = 9,911.88 : x
  2. Step 2: Convert to fraction form
    18,295.38/25,247.40 = 9,911.88/x
  3. Step 3: Cross multiply
    18,295.38x = 25,247.40 × 9,911.88
  4. Step 4: Simplify right side
    18,295.38x = 250,249,199.11
  5. Step 5: Solve for x
    x = 250,249,199.11/18,295.38
  6. Step 6: Final answer
    x = 13,678.27

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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.