Home / 22,718.65-31,345.44-13,641.66

Finding the Fourth Proportional to 22,718.65, 31,345.44 and 13,641.66

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Solution

The fourth proportional to 22,718.65, 31,345.44 and 13,641.66 is: 18,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,718.65 : 31,345.44 = 13,641.66 : x
  2. Step 2: Convert to fraction form
    22,718.65/31,345.44 = 13,641.66/x
  3. Step 3: Cross multiply
    22,718.65x = 31,345.44 × 13,641.66
  4. Step 4: Simplify right side
    22,718.65x = 427,603,835.03
  5. Step 5: Solve for x
    x = 427,603,835.03/22,718.65
  6. Step 6: Final answer
    x = 18,821.71

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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.