Home / 15,106.28-20,841.64-9,135.68

Finding the Fourth Proportional to 15,106.28, 20,841.64 and 9,135.68

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Solution

The fourth proportional to 15,106.28, 20,841.64 and 9,135.68 is: 12,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.28 : 20,841.64 = 9,135.68 : x
  2. Step 2: Convert to fraction form
    15,106.28/20,841.64 = 9,135.68/x
  3. Step 3: Cross multiply
    15,106.28x = 20,841.64 × 9,135.68
  4. Step 4: Simplify right side
    15,106.28x = 190,402,553.72
  5. Step 5: Solve for x
    x = 190,402,553.72/15,106.28
  6. Step 6: Final answer
    x = 12,604.20

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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.