Home / 20,813.40-28,703.24-14,108.76

Finding the Fourth Proportional to 20,813.40, 28,703.24 and 14,108.76

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Solution

The fourth proportional to 20,813.40, 28,703.24 and 14,108.76 is: 19,457.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.40 : 28,703.24 = 14,108.76 : x
  2. Step 2: Convert to fraction form
    20,813.40/28,703.24 = 14,108.76/x
  3. Step 3: Cross multiply
    20,813.40x = 28,703.24 × 14,108.76
  4. Step 4: Simplify right side
    20,813.40x = 404,967,124.38
  5. Step 5: Solve for x
    x = 404,967,124.38/20,813.40
  6. Step 6: Final answer
    x = 19,457.04

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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.