Home / 20,541.81-28,345.26-11,588.79

Finding the Fourth Proportional to 20,541.81, 28,345.26 and 11,588.79

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Solution

The fourth proportional to 20,541.81, 28,345.26 and 11,588.79 is: 15,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.81 : 28,345.26 = 11,588.79 : x
  2. Step 2: Convert to fraction form
    20,541.81/28,345.26 = 11,588.79/x
  3. Step 3: Cross multiply
    20,541.81x = 28,345.26 × 11,588.79
  4. Step 4: Simplify right side
    20,541.81x = 328,487,207.69
  5. Step 5: Solve for x
    x = 328,487,207.69/20,541.81
  6. Step 6: Final answer
    x = 15,991.15

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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.