Home / 18,288.28-25,237.88-9,904.78

Finding the Fourth Proportional to 18,288.28, 25,237.88 and 9,904.78

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Solution

The fourth proportional to 18,288.28, 25,237.88 and 9,904.78 is: 13,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.28 : 25,237.88 = 9,904.78 : x
  2. Step 2: Convert to fraction form
    18,288.28/25,237.88 = 9,904.78/x
  3. Step 3: Cross multiply
    18,288.28x = 25,237.88 × 9,904.78
  4. Step 4: Simplify right side
    18,288.28x = 249,975,668.23
  5. Step 5: Solve for x
    x = 249,975,668.23/18,288.28
  6. Step 6: Final answer
    x = 13,668.63

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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.