Home / 31,539.43-47,303.20-11,813.77

Finding the Fourth Proportional to 31,539.43, 47,303.20 and 11,813.77

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Solution

The fourth proportional to 31,539.43, 47,303.20 and 11,813.77 is: 17,718.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.43 : 47,303.20 = 11,813.77 : x
  2. Step 2: Convert to fraction form
    31,539.43/47,303.20 = 11,813.77/x
  3. Step 3: Cross multiply
    31,539.43x = 47,303.20 × 11,813.77
  4. Step 4: Simplify right side
    31,539.43x = 558,829,125.06
  5. Step 5: Solve for x
    x = 558,829,125.06/31,539.43
  6. Step 6: Final answer
    x = 17,718.43

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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.