Home / 20,417.18-28,176.39-11,465.46

Finding the Fourth Proportional to 20,417.18, 28,176.39 and 11,465.46

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Solution

The fourth proportional to 20,417.18, 28,176.39 and 11,465.46 is: 15,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.18 : 28,176.39 = 11,465.46 : x
  2. Step 2: Convert to fraction form
    20,417.18/28,176.39 = 11,465.46/x
  3. Step 3: Cross multiply
    20,417.18x = 28,176.39 × 11,465.46
  4. Step 4: Simplify right side
    20,417.18x = 323,055,272.49
  5. Step 5: Solve for x
    x = 323,055,272.49/20,417.18
  6. Step 6: Final answer
    x = 15,822.72

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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.