Home / 26,471.20-39,721.20-10,890.40

Finding the Fourth Proportional to 26,471.20, 39,721.20 and 10,890.40

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Solution

The fourth proportional to 26,471.20, 39,721.20 and 10,890.40 is: 16,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,471.20 : 39,721.20 = 10,890.40 : x
  2. Step 2: Convert to fraction form
    26,471.20/39,721.20 = 10,890.40/x
  3. Step 3: Cross multiply
    26,471.20x = 39,721.20 × 10,890.40
  4. Step 4: Simplify right side
    26,471.20x = 432,579,756.48
  5. Step 5: Solve for x
    x = 432,579,756.48/26,471.20
  6. Step 6: Final answer
    x = 16,341.52

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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.