Home / 26,775.81-36,933.30-21,101.76

Finding the Fourth Proportional to 26,775.81, 36,933.30 and 21,101.76

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Solution

The fourth proportional to 26,775.81, 36,933.30 and 21,101.76 is: 29,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,775.81 : 36,933.30 = 21,101.76 : x
  2. Step 2: Convert to fraction form
    26,775.81/36,933.30 = 21,101.76/x
  3. Step 3: Cross multiply
    26,775.81x = 36,933.30 × 21,101.76
  4. Step 4: Simplify right side
    26,775.81x = 779,357,632.61
  5. Step 5: Solve for x
    x = 779,357,632.61/26,775.81
  6. Step 6: Final answer
    x = 29,106.78

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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.