Home / 9,966.45-13,753.80-5,490.36

Finding the Fourth Proportional to 9,966.45, 13,753.80 and 5,490.36

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Solution

The fourth proportional to 9,966.45, 13,753.80 and 5,490.36 is: 7,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.45 : 13,753.80 = 5,490.36 : x
  2. Step 2: Convert to fraction form
    9,966.45/13,753.80 = 5,490.36/x
  3. Step 3: Cross multiply
    9,966.45x = 13,753.80 × 5,490.36
  4. Step 4: Simplify right side
    9,966.45x = 75,513,313.37
  5. Step 5: Solve for x
    x = 75,513,313.37/9,966.45
  6. Step 6: Final answer
    x = 7,576.75

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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.