Home / 9,903.60-13,666.78-5,427.36

Finding the Fourth Proportional to 9,903.60, 13,666.78 and 5,427.36

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Solution

The fourth proportional to 9,903.60, 13,666.78 and 5,427.36 is: 7,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.60 : 13,666.78 = 5,427.36 : x
  2. Step 2: Convert to fraction form
    9,903.60/13,666.78 = 5,427.36/x
  3. Step 3: Cross multiply
    9,903.60x = 13,666.78 × 5,427.36
  4. Step 4: Simplify right side
    9,903.60x = 74,174,535.10
  5. Step 5: Solve for x
    x = 74,174,535.10/9,903.60
  6. Step 6: Final answer
    x = 7,489.65

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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.