Home / 15,406.25-21,260.54-8,332.65

Finding the Fourth Proportional to 15,406.25, 21,260.54 and 8,332.65

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Solution

The fourth proportional to 15,406.25, 21,260.54 and 8,332.65 is: 11,499.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.25 : 21,260.54 = 8,332.65 : x
  2. Step 2: Convert to fraction form
    15,406.25/21,260.54 = 8,332.65/x
  3. Step 3: Cross multiply
    15,406.25x = 21,260.54 × 8,332.65
  4. Step 4: Simplify right side
    15,406.25x = 177,156,659.46
  5. Step 5: Solve for x
    x = 177,156,659.46/15,406.25
  6. Step 6: Final answer
    x = 11,499.02

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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.