Home / 31,327.11-47,002.95-13,784.63

Finding the Fourth Proportional to 31,327.11, 47,002.95 and 13,784.63

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Solution

The fourth proportional to 31,327.11, 47,002.95 and 13,784.63 is: 20,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,327.11 : 47,002.95 = 13,784.63 : x
  2. Step 2: Convert to fraction form
    31,327.11/47,002.95 = 13,784.63/x
  3. Step 3: Cross multiply
    31,327.11x = 47,002.95 × 13,784.63
  4. Step 4: Simplify right side
    31,327.11x = 647,918,039.64
  5. Step 5: Solve for x
    x = 647,918,039.64/31,327.11
  6. Step 6: Final answer
    x = 20,682.34

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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.