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Finding the Fourth Proportional to 9,011.81, 13,437.06 and 8,999.51

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Solution

The fourth proportional to 9,011.81, 13,437.06 and 8,999.51 is: 13,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,011.81 : 13,437.06 = 8,999.51 : x
  2. Step 2: Convert to fraction form
    9,011.81/13,437.06 = 8,999.51/x
  3. Step 3: Cross multiply
    9,011.81x = 13,437.06 × 8,999.51
  4. Step 4: Simplify right side
    9,011.81x = 120,926,930.84
  5. Step 5: Solve for x
    x = 120,926,930.84/9,011.81
  6. Step 6: Final answer
    x = 13,418.72

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.