Home / 19,761.24-29,641.86-7,920.38

Finding the Fourth Proportional to 19,761.24, 29,641.86 and 7,920.38

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Solution

The fourth proportional to 19,761.24, 29,641.86 and 7,920.38 is: 11,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.24 : 29,641.86 = 7,920.38 : x
  2. Step 2: Convert to fraction form
    19,761.24/29,641.86 = 7,920.38/x
  3. Step 3: Cross multiply
    19,761.24x = 29,641.86 × 7,920.38
  4. Step 4: Simplify right side
    19,761.24x = 234,774,795.11
  5. Step 5: Solve for x
    x = 234,774,795.11/19,761.24
  6. Step 6: Final answer
    x = 11,880.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.