Home / 15,309.39-21,127.51-8,940.06

Finding the Fourth Proportional to 15,309.39, 21,127.51 and 8,940.06

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Solution

The fourth proportional to 15,309.39, 21,127.51 and 8,940.06 is: 12,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.39 : 21,127.51 = 8,940.06 : x
  2. Step 2: Convert to fraction form
    15,309.39/21,127.51 = 8,940.06/x
  3. Step 3: Cross multiply
    15,309.39x = 21,127.51 × 8,940.06
  4. Step 4: Simplify right side
    15,309.39x = 188,881,207.05
  5. Step 5: Solve for x
    x = 188,881,207.05/15,309.39
  6. Step 6: Final answer
    x = 12,337.61

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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.