Home / 9,902.81-13,665.84-5,426.60

Finding the Fourth Proportional to 9,902.81, 13,665.84 and 5,426.60

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Solution

The fourth proportional to 9,902.81, 13,665.84 and 5,426.60 is: 7,488.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,902.81 : 13,665.84 = 5,426.60 : x
  2. Step 2: Convert to fraction form
    9,902.81/13,665.84 = 5,426.60/x
  3. Step 3: Cross multiply
    9,902.81x = 13,665.84 × 5,426.60
  4. Step 4: Simplify right side
    9,902.81x = 74,158,979.01
  5. Step 5: Solve for x
    x = 74,158,979.01/9,902.81
  6. Step 6: Final answer
    x = 7,488.68

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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.