Home / 9,869.42-13,628.89-6,338.78

Finding the Fourth Proportional to 9,869.42, 13,628.89 and 6,338.78

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Solution

The fourth proportional to 9,869.42, 13,628.89 and 6,338.78 is: 8,753.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.42 : 13,628.89 = 6,338.78 : x
  2. Step 2: Convert to fraction form
    9,869.42/13,628.89 = 6,338.78/x
  3. Step 3: Cross multiply
    9,869.42x = 13,628.89 × 6,338.78
  4. Step 4: Simplify right side
    9,869.42x = 86,390,535.35
  5. Step 5: Solve for x
    x = 86,390,535.35/9,869.42
  6. Step 6: Final answer
    x = 8,753.35

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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.