Home / 9,942.40-13,721.24-6,579.36

Finding the Fourth Proportional to 9,942.40, 13,721.24 and 6,579.36

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Solution

The fourth proportional to 9,942.40, 13,721.24 and 6,579.36 is: 9,080.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,942.40 : 13,721.24 = 6,579.36 : x
  2. Step 2: Convert to fraction form
    9,942.40/13,721.24 = 6,579.36/x
  3. Step 3: Cross multiply
    9,942.40x = 13,721.24 × 6,579.36
  4. Step 4: Simplify right side
    9,942.40x = 90,276,977.61
  5. Step 5: Solve for x
    x = 90,276,977.61/9,942.40
  6. Step 6: Final answer
    x = 9,080.00

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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.