Home / 20,532.88-28,335.36-11,101.45

Finding the Fourth Proportional to 20,532.88, 28,335.36 and 11,101.45

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Solution

The fourth proportional to 20,532.88, 28,335.36 and 11,101.45 is: 15,319.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.88 : 28,335.36 = 11,101.45 : x
  2. Step 2: Convert to fraction form
    20,532.88/28,335.36 = 11,101.45/x
  3. Step 3: Cross multiply
    20,532.88x = 28,335.36 × 11,101.45
  4. Step 4: Simplify right side
    20,532.88x = 314,563,582.27
  5. Step 5: Solve for x
    x = 314,563,582.27/20,532.88
  6. Step 6: Final answer
    x = 15,319.99

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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.