Home / 26,689.76-36,789.45-21,015.51

Finding the Fourth Proportional to 26,689.76, 36,789.45 and 21,015.51

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Solution

The fourth proportional to 26,689.76, 36,789.45 and 21,015.51 is: 28,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,689.76 : 36,789.45 = 21,015.51 : x
  2. Step 2: Convert to fraction form
    26,689.76/36,789.45 = 21,015.51/x
  3. Step 3: Cross multiply
    26,689.76x = 36,789.45 × 21,015.51
  4. Step 4: Simplify right side
    26,689.76x = 773,149,054.37
  5. Step 5: Solve for x
    x = 773,149,054.37/26,689.76
  6. Step 6: Final answer
    x = 28,968.00

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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.