Home / 20,366.33-28,106.65-11,416.70

Finding the Fourth Proportional to 20,366.33, 28,106.65 and 11,416.70

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Solution

The fourth proportional to 20,366.33, 28,106.65 and 11,416.70 is: 15,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.33 : 28,106.65 = 11,416.70 : x
  2. Step 2: Convert to fraction form
    20,366.33/28,106.65 = 11,416.70/x
  3. Step 3: Cross multiply
    20,366.33x = 28,106.65 × 11,416.70
  4. Step 4: Simplify right side
    20,366.33x = 320,885,275.59
  5. Step 5: Solve for x
    x = 320,885,275.59/20,366.33
  6. Step 6: Final answer
    x = 15,755.68

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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.