Home / 18,370.50-25,351.47-9,987.18

Finding the Fourth Proportional to 18,370.50, 25,351.47 and 9,987.18

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Solution

The fourth proportional to 18,370.50, 25,351.47 and 9,987.18 is: 13,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.50 : 25,351.47 = 9,987.18 : x
  2. Step 2: Convert to fraction form
    18,370.50/25,351.47 = 9,987.18/x
  3. Step 3: Cross multiply
    18,370.50x = 25,351.47 × 9,987.18
  4. Step 4: Simplify right side
    18,370.50x = 253,189,694.15
  5. Step 5: Solve for x
    x = 253,189,694.15/18,370.50
  6. Step 6: Final answer
    x = 13,782.41

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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.