Home / 31,578.77-47,350.74-12,854

Finding the Fourth Proportional to 31,578.77, 47,350.74 and 12,854

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Solution

The fourth proportional to 31,578.77, 47,350.74 and 12,854 is: 19,273.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.77 : 47,350.74 = 12,854 : x
  2. Step 2: Convert to fraction form
    31,578.77/47,350.74 = 12,854/x
  3. Step 3: Cross multiply
    31,578.77x = 47,350.74 × 12,854
  4. Step 4: Simplify right side
    31,578.77x = 608,646,411.96
  5. Step 5: Solve for x
    x = 608,646,411.96/31,578.77
  6. Step 6: Final answer
    x = 19,273.91

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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.