Home / 9,677.88-13,356.36-5,429.70

Finding the Fourth Proportional to 9,677.88, 13,356.36 and 5,429.70

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Solution

The fourth proportional to 9,677.88, 13,356.36 and 5,429.70 is: 7,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,677.88 : 13,356.36 = 5,429.70 : x
  2. Step 2: Convert to fraction form
    9,677.88/13,356.36 = 5,429.70/x
  3. Step 3: Cross multiply
    9,677.88x = 13,356.36 × 5,429.70
  4. Step 4: Simplify right side
    9,677.88x = 72,521,027.89
  5. Step 5: Solve for x
    x = 72,521,027.89/9,677.88
  6. Step 6: Final answer
    x = 7,493.48

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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.