Home / 18,270.30-25,213.01-9,886.80

Finding the Fourth Proportional to 18,270.30, 25,213.01 and 9,886.80

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Solution

The fourth proportional to 18,270.30, 25,213.01 and 9,886.80 is: 13,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.30 : 25,213.01 = 9,886.80 : x
  2. Step 2: Convert to fraction form
    18,270.30/25,213.01 = 9,886.80/x
  3. Step 3: Cross multiply
    18,270.30x = 25,213.01 × 9,886.80
  4. Step 4: Simplify right side
    18,270.30x = 249,275,987.27
  5. Step 5: Solve for x
    x = 249,275,987.27/18,270.30
  6. Step 6: Final answer
    x = 13,643.78

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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.