Home / 9,903.84-13,667.46-5,428.02

Finding the Fourth Proportional to 9,903.84, 13,667.46 and 5,428.02

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Solution

The fourth proportional to 9,903.84, 13,667.46 and 5,428.02 is: 7,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.84 : 13,667.46 = 5,428.02 : x
  2. Step 2: Convert to fraction form
    9,903.84/13,667.46 = 5,428.02/x
  3. Step 3: Cross multiply
    9,903.84x = 13,667.46 × 5,428.02
  4. Step 4: Simplify right side
    9,903.84x = 74,187,246.23
  5. Step 5: Solve for x
    x = 74,187,246.23/9,903.84
  6. Step 6: Final answer
    x = 7,490.76

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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.