Home / 20,572.83-28,389.15-11,621.25

Finding the Fourth Proportional to 20,572.83, 28,389.15 and 11,621.25

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Solution

The fourth proportional to 20,572.83, 28,389.15 and 11,621.25 is: 16,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.83 : 28,389.15 = 11,621.25 : x
  2. Step 2: Convert to fraction form
    20,572.83/28,389.15 = 11,621.25/x
  3. Step 3: Cross multiply
    20,572.83x = 28,389.15 × 11,621.25
  4. Step 4: Simplify right side
    20,572.83x = 329,917,409.44
  5. Step 5: Solve for x
    x = 329,917,409.44/20,572.83
  6. Step 6: Final answer
    x = 16,036.56

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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.