Home / 20,395.28-28,152.51-12,854.32

Finding the Fourth Proportional to 20,395.28, 28,152.51 and 12,854.32

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Solution

The fourth proportional to 20,395.28, 28,152.51 and 12,854.32 is: 17,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.28 : 28,152.51 = 12,854.32 : x
  2. Step 2: Convert to fraction form
    20,395.28/28,152.51 = 12,854.32/x
  3. Step 3: Cross multiply
    20,395.28x = 28,152.51 × 12,854.32
  4. Step 4: Simplify right side
    20,395.28x = 361,881,231.58
  5. Step 5: Solve for x
    x = 361,881,231.58/20,395.28
  6. Step 6: Final answer
    x = 17,743.38

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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.