Home / 18,403.30-25,401.45-11,335.63

Finding the Fourth Proportional to 18,403.30, 25,401.45 and 11,335.63

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Solution

The fourth proportional to 18,403.30, 25,401.45 and 11,335.63 is: 15,646.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.30 : 25,401.45 = 11,335.63 : x
  2. Step 2: Convert to fraction form
    18,403.30/25,401.45 = 11,335.63/x
  3. Step 3: Cross multiply
    18,403.30x = 25,401.45 × 11,335.63
  4. Step 4: Simplify right side
    18,403.30x = 287,941,438.66
  5. Step 5: Solve for x
    x = 287,941,438.66/18,403.30
  6. Step 6: Final answer
    x = 15,646.19

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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.