Home / 29,318.76-40,421.84-18,689.94

Finding the Fourth Proportional to 29,318.76, 40,421.84 and 18,689.94

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Solution

The fourth proportional to 29,318.76, 40,421.84 and 18,689.94 is: 25,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,318.76 : 40,421.84 = 18,689.94 : x
  2. Step 2: Convert to fraction form
    29,318.76/40,421.84 = 18,689.94/x
  3. Step 3: Cross multiply
    29,318.76x = 40,421.84 × 18,689.94
  4. Step 4: Simplify right side
    29,318.76x = 755,481,670.84
  5. Step 5: Solve for x
    x = 755,481,670.84/29,318.76
  6. Step 6: Final answer
    x = 25,767.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.