Home / 20,671.83-28,526.99-11,240.40

Finding the Fourth Proportional to 20,671.83, 28,526.99 and 11,240.40

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Solution

The fourth proportional to 20,671.83, 28,526.99 and 11,240.40 is: 15,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.83 : 28,526.99 = 11,240.40 : x
  2. Step 2: Convert to fraction form
    20,671.83/28,526.99 = 11,240.40/x
  3. Step 3: Cross multiply
    20,671.83x = 28,526.99 × 11,240.40
  4. Step 4: Simplify right side
    20,671.83x = 320,654,722.19
  5. Step 5: Solve for x
    x = 320,654,722.19/20,671.83
  6. Step 6: Final answer
    x = 15,511.68

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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.