Home / 20,407.77-28,162.77-11,333.14

Finding the Fourth Proportional to 20,407.77, 28,162.77 and 11,333.14

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Solution

The fourth proportional to 20,407.77, 28,162.77 and 11,333.14 is: 15,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.77 : 28,162.77 = 11,333.14 : x
  2. Step 2: Convert to fraction form
    20,407.77/28,162.77 = 11,333.14/x
  3. Step 3: Cross multiply
    20,407.77x = 28,162.77 × 11,333.14
  4. Step 4: Simplify right side
    20,407.77x = 319,172,615.20
  5. Step 5: Solve for x
    x = 319,172,615.20/20,407.77
  6. Step 6: Final answer
    x = 15,639.76

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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.