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Finding the Fourth Proportional to 9,176.98, 13,798.68 and 8,455.28

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Solution

The fourth proportional to 9,176.98, 13,798.68 and 8,455.28 is: 12,713.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,176.98 : 13,798.68 = 8,455.28 : x
  2. Step 2: Convert to fraction form
    9,176.98/13,798.68 = 8,455.28/x
  3. Step 3: Cross multiply
    9,176.98x = 13,798.68 × 8,455.28
  4. Step 4: Simplify right side
    9,176.98x = 116,671,703.03
  5. Step 5: Solve for x
    x = 116,671,703.03/9,176.98
  6. Step 6: Final answer
    x = 12,713.52

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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.