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Finding the Fourth Proportional to 9,900.70, 14,829.45 and 7,692.10

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Solution

The fourth proportional to 9,900.70, 14,829.45 and 7,692.10 is: 11,521.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.70 : 14,829.45 = 7,692.10 : x
  2. Step 2: Convert to fraction form
    9,900.70/14,829.45 = 7,692.10/x
  3. Step 3: Cross multiply
    9,900.70x = 14,829.45 × 7,692.10
  4. Step 4: Simplify right side
    9,900.70x = 114,069,612.35
  5. Step 5: Solve for x
    x = 114,069,612.35/9,900.70
  6. Step 6: Final answer
    x = 11,521.37

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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.