Home / 15,405.86-21,260.12-8,332.29

Finding the Fourth Proportional to 15,405.86, 21,260.12 and 8,332.29

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Solution

The fourth proportional to 15,405.86, 21,260.12 and 8,332.29 is: 11,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.86 : 21,260.12 = 8,332.29 : x
  2. Step 2: Convert to fraction form
    15,405.86/21,260.12 = 8,332.29/x
  3. Step 3: Cross multiply
    15,405.86x = 21,260.12 × 8,332.29
  4. Step 4: Simplify right side
    15,405.86x = 177,145,443.61
  5. Step 5: Solve for x
    x = 177,145,443.61/15,405.86
  6. Step 6: Final answer
    x = 11,498.57

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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.