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Finding the Fourth Proportional to 9,855.13, 13,600.08 and 7,339.40

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Solution

The fourth proportional to 9,855.13, 13,600.08 and 7,339.40 is: 10,128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.13 : 13,600.08 = 7,339.40 : x
  2. Step 2: Convert to fraction form
    9,855.13/13,600.08 = 7,339.40/x
  3. Step 3: Cross multiply
    9,855.13x = 13,600.08 × 7,339.40
  4. Step 4: Simplify right side
    9,855.13x = 99,816,427.15
  5. Step 5: Solve for x
    x = 99,816,427.15/9,855.13
  6. Step 6: Final answer
    x = 10,128.37

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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.