Home / 26,776.81-36,934.68-21,102.76

Finding the Fourth Proportional to 26,776.81, 36,934.68 and 21,102.76

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Solution

The fourth proportional to 26,776.81, 36,934.68 and 21,102.76 is: 29,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,776.81 : 36,934.68 = 21,102.76 : x
  2. Step 2: Convert to fraction form
    26,776.81/36,934.68 = 21,102.76/x
  3. Step 3: Cross multiply
    26,776.81x = 36,934.68 × 21,102.76
  4. Step 4: Simplify right side
    26,776.81x = 779,423,687.72
  5. Step 5: Solve for x
    x = 779,423,687.72/26,776.81
  6. Step 6: Final answer
    x = 29,108.16

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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.