Home / 20,417.74-28,176.14-11,465.26

Finding the Fourth Proportional to 20,417.74, 28,176.14 and 11,465.26

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Solution

The fourth proportional to 20,417.74, 28,176.14 and 11,465.26 is: 15,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.74 : 28,176.14 = 11,465.26 : x
  2. Step 2: Convert to fraction form
    20,417.74/28,176.14 = 11,465.26/x
  3. Step 3: Cross multiply
    20,417.74x = 28,176.14 × 11,465.26
  4. Step 4: Simplify right side
    20,417.74x = 323,046,770.90
  5. Step 5: Solve for x
    x = 323,046,770.90/20,417.74
  6. Step 6: Final answer
    x = 15,821.87

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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.