Home / 20,541.51-28,347.06-11,591.91

Finding the Fourth Proportional to 20,541.51, 28,347.06 and 11,591.91

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Solution

The fourth proportional to 20,541.51, 28,347.06 and 11,591.91 is: 15,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.51 : 28,347.06 = 11,591.91 : x
  2. Step 2: Convert to fraction form
    20,541.51/28,347.06 = 11,591.91/x
  3. Step 3: Cross multiply
    20,541.51x = 28,347.06 × 11,591.91
  4. Step 4: Simplify right side
    20,541.51x = 328,596,568.28
  5. Step 5: Solve for x
    x = 328,596,568.28/20,541.51
  6. Step 6: Final answer
    x = 15,996.71

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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.