Home / 26,783.12-36,917.84-21,108.47

Finding the Fourth Proportional to 26,783.12, 36,917.84 and 21,108.47

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Solution

The fourth proportional to 26,783.12, 36,917.84 and 21,108.47 is: 29,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,783.12 : 36,917.84 = 21,108.47 : x
  2. Step 2: Convert to fraction form
    26,783.12/36,917.84 = 21,108.47/x
  3. Step 3: Cross multiply
    26,783.12x = 36,917.84 × 21,108.47
  4. Step 4: Simplify right side
    26,783.12x = 779,278,986.29
  5. Step 5: Solve for x
    x = 779,278,986.29/26,783.12
  6. Step 6: Final answer
    x = 29,095.90

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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.