Home / 9,903.90-13,667.36-5,427.64

Finding the Fourth Proportional to 9,903.90, 13,667.36 and 5,427.64

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Solution

The fourth proportional to 9,903.90, 13,667.36 and 5,427.64 is: 7,490.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.90 : 13,667.36 = 5,427.64 : x
  2. Step 2: Convert to fraction form
    9,903.90/13,667.36 = 5,427.64/x
  3. Step 3: Cross multiply
    9,903.90x = 13,667.36 × 5,427.64
  4. Step 4: Simplify right side
    9,903.90x = 74,181,509.83
  5. Step 5: Solve for x
    x = 74,181,509.83/9,903.90
  6. Step 6: Final answer
    x = 7,490.13

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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.