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Finding the Fourth Proportional to 9,966.70, 14,955.20 and 4,423.87

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Solution

The fourth proportional to 9,966.70, 14,955.20 and 4,423.87 is: 6,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.70 : 14,955.20 = 4,423.87 : x
  2. Step 2: Convert to fraction form
    9,966.70/14,955.20 = 4,423.87/x
  3. Step 3: Cross multiply
    9,966.70x = 14,955.20 × 4,423.87
  4. Step 4: Simplify right side
    9,966.70x = 66,159,763.73
  5. Step 5: Solve for x
    x = 66,159,763.73/9,966.70
  6. Step 6: Final answer
    x = 6,638.08

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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.