Home / 31,758.71-47,637.26-8,385.35

Finding the Fourth Proportional to 31,758.71, 47,637.26 and 8,385.35

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Solution

The fourth proportional to 31,758.71, 47,637.26 and 8,385.35 is: 12,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.71 : 47,637.26 = 8,385.35 : x
  2. Step 2: Convert to fraction form
    31,758.71/47,637.26 = 8,385.35/x
  3. Step 3: Cross multiply
    31,758.71x = 47,637.26 × 8,385.35
  4. Step 4: Simplify right side
    31,758.71x = 399,455,056.21
  5. Step 5: Solve for x
    x = 399,455,056.21/31,758.71
  6. Step 6: Final answer
    x = 12,577.81

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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.