Home / 31,696.96-47,545.36-12,985.72

Finding the Fourth Proportional to 31,696.96, 47,545.36 and 12,985.72

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Solution

The fourth proportional to 31,696.96, 47,545.36 and 12,985.72 is: 19,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,696.96 : 47,545.36 = 12,985.72 : x
  2. Step 2: Convert to fraction form
    31,696.96/47,545.36 = 12,985.72/x
  3. Step 3: Cross multiply
    31,696.96x = 47,545.36 × 12,985.72
  4. Step 4: Simplify right side
    31,696.96x = 617,410,732.26
  5. Step 5: Solve for x
    x = 617,410,732.26/31,696.96
  6. Step 6: Final answer
    x = 19,478.55

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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.