Home / 9,869.40-14,815.71-7,790.85

Finding the Fourth Proportional to 9,869.40, 14,815.71 and 7,790.85

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Solution

The fourth proportional to 9,869.40, 14,815.71 and 7,790.85 is: 11,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.40 : 14,815.71 = 7,790.85 : x
  2. Step 2: Convert to fraction form
    9,869.40/14,815.71 = 7,790.85/x
  3. Step 3: Cross multiply
    9,869.40x = 14,815.71 × 7,790.85
  4. Step 4: Simplify right side
    9,869.40x = 115,426,974.25
  5. Step 5: Solve for x
    x = 115,426,974.25/9,869.40
  6. Step 6: Final answer
    x = 11,695.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.