Home / 26,490.63-36,555.05-15,878.21

Finding the Fourth Proportional to 26,490.63, 36,555.05 and 15,878.21

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Solution

The fourth proportional to 26,490.63, 36,555.05 and 15,878.21 is: 21,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.63 : 36,555.05 = 15,878.21 : x
  2. Step 2: Convert to fraction form
    26,490.63/36,555.05 = 15,878.21/x
  3. Step 3: Cross multiply
    26,490.63x = 36,555.05 × 15,878.21
  4. Step 4: Simplify right side
    26,490.63x = 580,428,498.29
  5. Step 5: Solve for x
    x = 580,428,498.29/26,490.63
  6. Step 6: Final answer
    x = 21,910.71

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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.