Home / 22,790.57-31,449.67-12,718.22

Finding the Fourth Proportional to 22,790.57, 31,449.67 and 12,718.22

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Solution

The fourth proportional to 22,790.57, 31,449.67 and 12,718.22 is: 17,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,790.57 : 31,449.67 = 12,718.22 : x
  2. Step 2: Convert to fraction form
    22,790.57/31,449.67 = 12,718.22/x
  3. Step 3: Cross multiply
    22,790.57x = 31,449.67 × 12,718.22
  4. Step 4: Simplify right side
    22,790.57x = 399,983,632.94
  5. Step 5: Solve for x
    x = 399,983,632.94/22,790.57
  6. Step 6: Final answer
    x = 17,550.40

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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.