Home / 31,426.49-47,131.99-18,779.87

Finding the Fourth Proportional to 31,426.49, 47,131.99 and 18,779.87

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Solution

The fourth proportional to 31,426.49, 47,131.99 and 18,779.87 is: 28,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.49 : 47,131.99 = 18,779.87 : x
  2. Step 2: Convert to fraction form
    31,426.49/47,131.99 = 18,779.87/x
  3. Step 3: Cross multiply
    31,426.49x = 47,131.99 × 18,779.87
  4. Step 4: Simplify right side
    31,426.49x = 885,132,715.92
  5. Step 5: Solve for x
    x = 885,132,715.92/31,426.49
  6. Step 6: Final answer
    x = 28,165.18

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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.