Home / 15,194.34-20,961-9,887.22

Finding the Fourth Proportional to 15,194.34, 20,961 and 9,887.22

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Solution

The fourth proportional to 15,194.34, 20,961 and 9,887.22 is: 13,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.34 : 20,961 = 9,887.22 : x
  2. Step 2: Convert to fraction form
    15,194.34/20,961 = 9,887.22/x
  3. Step 3: Cross multiply
    15,194.34x = 20,961 × 9,887.22
  4. Step 4: Simplify right side
    15,194.34x = 207,246,018.42
  5. Step 5: Solve for x
    x = 207,246,018.42/15,194.34
  6. Step 6: Final answer
    x = 13,639.69

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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.