Home / 15,295.20-21,107.59-8,580.43

Finding the Fourth Proportional to 15,295.20, 21,107.59 and 8,580.43

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Solution

The fourth proportional to 15,295.20, 21,107.59 and 8,580.43 is: 11,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.20 : 21,107.59 = 8,580.43 : x
  2. Step 2: Convert to fraction form
    15,295.20/21,107.59 = 8,580.43/x
  3. Step 3: Cross multiply
    15,295.20x = 21,107.59 × 8,580.43
  4. Step 4: Simplify right side
    15,295.20x = 181,112,203.40
  5. Step 5: Solve for x
    x = 181,112,203.40/15,295.20
  6. Step 6: Final answer
    x = 11,841.11

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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.