Home / 20,532.11-28,332.36-11,581.01

Finding the Fourth Proportional to 20,532.11, 28,332.36 and 11,581.01

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Solution

The fourth proportional to 20,532.11, 28,332.36 and 11,581.01 is: 15,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.11 : 28,332.36 = 11,581.01 : x
  2. Step 2: Convert to fraction form
    20,532.11/28,332.36 = 11,581.01/x
  3. Step 3: Cross multiply
    20,532.11x = 28,332.36 × 11,581.01
  4. Step 4: Simplify right side
    20,532.11x = 328,117,344.48
  5. Step 5: Solve for x
    x = 328,117,344.48/20,532.11
  6. Step 6: Final answer
    x = 15,980.69

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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.