Home / 20,357.76-28,088.40-11,741.82

Finding the Fourth Proportional to 20,357.76, 28,088.40 and 11,741.82

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Solution

The fourth proportional to 20,357.76, 28,088.40 and 11,741.82 is: 16,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.76 : 28,088.40 = 11,741.82 : x
  2. Step 2: Convert to fraction form
    20,357.76/28,088.40 = 11,741.82/x
  3. Step 3: Cross multiply
    20,357.76x = 28,088.40 × 11,741.82
  4. Step 4: Simplify right side
    20,357.76x = 329,808,936.89
  5. Step 5: Solve for x
    x = 329,808,936.89/20,357.76
  6. Step 6: Final answer
    x = 16,200.65

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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.