Home / 22,120.70-30,525.32-12,689.26

Finding the Fourth Proportional to 22,120.70, 30,525.32 and 12,689.26

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Solution

The fourth proportional to 22,120.70, 30,525.32 and 12,689.26 is: 17,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,120.70 : 30,525.32 = 12,689.26 : x
  2. Step 2: Convert to fraction form
    22,120.70/30,525.32 = 12,689.26/x
  3. Step 3: Cross multiply
    22,120.70x = 30,525.32 × 12,689.26
  4. Step 4: Simplify right side
    22,120.70x = 387,343,677.47
  5. Step 5: Solve for x
    x = 387,343,677.47/22,120.70
  6. Step 6: Final answer
    x = 17,510.47

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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.