Home / 18,828.88-25,983.12-10,445.20

Finding the Fourth Proportional to 18,828.88, 25,983.12 and 10,445.20

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Solution

The fourth proportional to 18,828.88, 25,983.12 and 10,445.20 is: 14,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.88 : 25,983.12 = 10,445.20 : x
  2. Step 2: Convert to fraction form
    18,828.88/25,983.12 = 10,445.20/x
  3. Step 3: Cross multiply
    18,828.88x = 25,983.12 × 10,445.20
  4. Step 4: Simplify right side
    18,828.88x = 271,398,885.02
  5. Step 5: Solve for x
    x = 271,398,885.02/18,828.88
  6. Step 6: Final answer
    x = 14,413.97

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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.