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Finding the Fourth Proportional to 9,509.01, 13,123.13 and 5,316.99

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Solution

The fourth proportional to 9,509.01, 13,123.13 and 5,316.99 is: 7,337.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,509.01 : 13,123.13 = 5,316.99 : x
  2. Step 2: Convert to fraction form
    9,509.01/13,123.13 = 5,316.99/x
  3. Step 3: Cross multiply
    9,509.01x = 13,123.13 × 5,316.99
  4. Step 4: Simplify right side
    9,509.01x = 69,775,524.39
  5. Step 5: Solve for x
    x = 69,775,524.39/9,509.01
  6. Step 6: Final answer
    x = 7,337.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.