Home / 9,966.20-14,927.70-8,238.20

Finding the Fourth Proportional to 9,966.20, 14,927.70 and 8,238.20

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Solution

The fourth proportional to 9,966.20, 14,927.70 and 8,238.20 is: 12,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.20 : 14,927.70 = 8,238.20 : x
  2. Step 2: Convert to fraction form
    9,966.20/14,927.70 = 8,238.20/x
  3. Step 3: Cross multiply
    9,966.20x = 14,927.70 × 8,238.20
  4. Step 4: Simplify right side
    9,966.20x = 122,977,378.14
  5. Step 5: Solve for x
    x = 122,977,378.14/9,966.20
  6. Step 6: Final answer
    x = 12,339.45

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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.