Home / 15,722.51-21,697.07-8,649.18

Finding the Fourth Proportional to 15,722.51, 21,697.07 and 8,649.18

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Solution

The fourth proportional to 15,722.51, 21,697.07 and 8,649.18 is: 11,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.51 : 21,697.07 = 8,649.18 : x
  2. Step 2: Convert to fraction form
    15,722.51/21,697.07 = 8,649.18/x
  3. Step 3: Cross multiply
    15,722.51x = 21,697.07 × 8,649.18
  4. Step 4: Simplify right side
    15,722.51x = 187,661,820.66
  5. Step 5: Solve for x
    x = 187,661,820.66/15,722.51
  6. Step 6: Final answer
    x = 11,935.87

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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.