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Finding the Fourth Proportional to 9,996.80, 14,962.80 and 8,830.40

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Solution

The fourth proportional to 9,996.80, 14,962.80 and 8,830.40 is: 13,216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,996.80 : 14,962.80 = 8,830.40 : x
  2. Step 2: Convert to fraction form
    9,996.80/14,962.80 = 8,830.40/x
  3. Step 3: Cross multiply
    9,996.80x = 14,962.80 × 8,830.40
  4. Step 4: Simplify right side
    9,996.80x = 132,127,509.12
  5. Step 5: Solve for x
    x = 132,127,509.12/9,996.80
  6. Step 6: Final answer
    x = 13,216.98

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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.