Home / 18,288.40-25,237.97-9,904.90

Finding the Fourth Proportional to 18,288.40, 25,237.97 and 9,904.90

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Solution

The fourth proportional to 18,288.40, 25,237.97 and 9,904.90 is: 13,668.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.40 : 25,237.97 = 9,904.90 : x
  2. Step 2: Convert to fraction form
    18,288.40/25,237.97 = 9,904.90/x
  3. Step 3: Cross multiply
    18,288.40x = 25,237.97 × 9,904.90
  4. Step 4: Simplify right side
    18,288.40x = 249,979,569.05
  5. Step 5: Solve for x
    x = 249,979,569.05/18,288.40
  6. Step 6: Final answer
    x = 13,668.75

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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.