Home / 10,121.52-13,964.36-5,644.46

Finding the Fourth Proportional to 10,121.52, 13,964.36 and 5,644.46

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Solution

The fourth proportional to 10,121.52, 13,964.36 and 5,644.46 is: 7,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.52 : 13,964.36 = 5,644.46 : x
  2. Step 2: Convert to fraction form
    10,121.52/13,964.36 = 5,644.46/x
  3. Step 3: Cross multiply
    10,121.52x = 13,964.36 × 5,644.46
  4. Step 4: Simplify right side
    10,121.52x = 78,821,271.45
  5. Step 5: Solve for x
    x = 78,821,271.45/10,121.52
  6. Step 6: Final answer
    x = 7,787.49

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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.