Home / 26,880.31-40,320.56-8,160.51

Finding the Fourth Proportional to 26,880.31, 40,320.56 and 8,160.51

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Solution

The fourth proportional to 26,880.31, 40,320.56 and 8,160.51 is: 12,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,880.31 : 40,320.56 = 8,160.51 : x
  2. Step 2: Convert to fraction form
    26,880.31/40,320.56 = 8,160.51/x
  3. Step 3: Cross multiply
    26,880.31x = 40,320.56 × 8,160.51
  4. Step 4: Simplify right side
    26,880.31x = 329,036,333.09
  5. Step 5: Solve for x
    x = 329,036,333.09/26,880.31
  6. Step 6: Final answer
    x = 12,240.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.