Home / 18,746.72-25,869.40-10,987.80

Finding the Fourth Proportional to 18,746.72, 25,869.40 and 10,987.80

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Solution

The fourth proportional to 18,746.72, 25,869.40 and 10,987.80 is: 15,162.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.72 : 25,869.40 = 10,987.80 : x
  2. Step 2: Convert to fraction form
    18,746.72/25,869.40 = 10,987.80/x
  3. Step 3: Cross multiply
    18,746.72x = 25,869.40 × 10,987.80
  4. Step 4: Simplify right side
    18,746.72x = 284,247,793.32
  5. Step 5: Solve for x
    x = 284,247,793.32/18,746.72
  6. Step 6: Final answer
    x = 15,162.53

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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.