Home / 15,245.57-21,036.35-8,959.16

Finding the Fourth Proportional to 15,245.57, 21,036.35 and 8,959.16

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Solution

The fourth proportional to 15,245.57, 21,036.35 and 8,959.16 is: 12,362.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.57 : 21,036.35 = 8,959.16 : x
  2. Step 2: Convert to fraction form
    15,245.57/21,036.35 = 8,959.16/x
  3. Step 3: Cross multiply
    15,245.57x = 21,036.35 × 8,959.16
  4. Step 4: Simplify right side
    15,245.57x = 188,468,025.47
  5. Step 5: Solve for x
    x = 188,468,025.47/15,245.57
  6. Step 6: Final answer
    x = 12,362.15

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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.