Home / 31,798.31-47,709.89-11,820.07

Finding the Fourth Proportional to 31,798.31, 47,709.89 and 11,820.07

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Solution

The fourth proportional to 31,798.31, 47,709.89 and 11,820.07 is: 17,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,798.31 : 47,709.89 = 11,820.07 : x
  2. Step 2: Convert to fraction form
    31,798.31/47,709.89 = 11,820.07/x
  3. Step 3: Cross multiply
    31,798.31x = 47,709.89 × 11,820.07
  4. Step 4: Simplify right side
    31,798.31x = 563,933,941.84
  5. Step 5: Solve for x
    x = 563,933,941.84/31,798.31
  6. Step 6: Final answer
    x = 17,734.71

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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.