Home / 22,661.36-31,272.12-12,589.61

Finding the Fourth Proportional to 22,661.36, 31,272.12 and 12,589.61

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Solution

The fourth proportional to 22,661.36, 31,272.12 and 12,589.61 is: 17,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661.36 : 31,272.12 = 12,589.61 : x
  2. Step 2: Convert to fraction form
    22,661.36/31,272.12 = 12,589.61/x
  3. Step 3: Cross multiply
    22,661.36x = 31,272.12 × 12,589.61
  4. Step 4: Simplify right side
    22,661.36x = 393,703,638.31
  5. Step 5: Solve for x
    x = 393,703,638.31/22,661.36
  6. Step 6: Final answer
    x = 17,373.35

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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.