Home / 18,708.23-25,820.71-11,155.05

Finding the Fourth Proportional to 18,708.23, 25,820.71 and 11,155.05

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Solution

The fourth proportional to 18,708.23, 25,820.71 and 11,155.05 is: 15,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.23 : 25,820.71 = 11,155.05 : x
  2. Step 2: Convert to fraction form
    18,708.23/25,820.71 = 11,155.05/x
  3. Step 3: Cross multiply
    18,708.23x = 25,820.71 × 11,155.05
  4. Step 4: Simplify right side
    18,708.23x = 288,031,283.20
  5. Step 5: Solve for x
    x = 288,031,283.20/18,708.23
  6. Step 6: Final answer
    x = 15,395.96

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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.