Home / 31,857.08-47,766.18-13,131.32

Finding the Fourth Proportional to 31,857.08, 47,766.18 and 13,131.32

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Solution

The fourth proportional to 31,857.08, 47,766.18 and 13,131.32 is: 19,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,857.08 : 47,766.18 = 13,131.32 : x
  2. Step 2: Convert to fraction form
    31,857.08/47,766.18 = 13,131.32/x
  3. Step 3: Cross multiply
    31,857.08x = 47,766.18 × 13,131.32
  4. Step 4: Simplify right side
    31,857.08x = 627,232,994.76
  5. Step 5: Solve for x
    x = 627,232,994.76/31,857.08
  6. Step 6: Final answer
    x = 19,688.97

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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.