Home / 9,900.20-14,864.70-6,991.40

Finding the Fourth Proportional to 9,900.20, 14,864.70 and 6,991.40

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Solution

The fourth proportional to 9,900.20, 14,864.70 and 6,991.40 is: 10,497.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.20 : 14,864.70 = 6,991.40 : x
  2. Step 2: Convert to fraction form
    9,900.20/14,864.70 = 6,991.40/x
  3. Step 3: Cross multiply
    9,900.20x = 14,864.70 × 6,991.40
  4. Step 4: Simplify right side
    9,900.20x = 103,925,063.58
  5. Step 5: Solve for x
    x = 103,925,063.58/9,900.20
  6. Step 6: Final answer
    x = 10,497.27

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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.