Home / 26,420.18-36,398.58-18,449.78

Finding the Fourth Proportional to 26,420.18, 36,398.58 and 18,449.78

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Solution

The fourth proportional to 26,420.18, 36,398.58 and 18,449.78 is: 25,417.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,420.18 : 36,398.58 = 18,449.78 : x
  2. Step 2: Convert to fraction form
    26,420.18/36,398.58 = 18,449.78/x
  3. Step 3: Cross multiply
    26,420.18x = 36,398.58 × 18,449.78
  4. Step 4: Simplify right side
    26,420.18x = 671,545,793.31
  5. Step 5: Solve for x
    x = 671,545,793.31/26,420.18
  6. Step 6: Final answer
    x = 25,417.91

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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.