Home / 15,405.66-21,259.70-8,332.06

Finding the Fourth Proportional to 15,405.66, 21,259.70 and 8,332.06

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Solution

The fourth proportional to 15,405.66, 21,259.70 and 8,332.06 is: 11,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.66 : 21,259.70 = 8,332.06 : x
  2. Step 2: Convert to fraction form
    15,405.66/21,259.70 = 8,332.06/x
  3. Step 3: Cross multiply
    15,405.66x = 21,259.70 × 8,332.06
  4. Step 4: Simplify right side
    15,405.66x = 177,137,095.98
  5. Step 5: Solve for x
    x = 177,137,095.98/15,405.66
  6. Step 6: Final answer
    x = 11,498.18

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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.