Home / 13,588.02-20,378.66-7,667.51

Finding the Fourth Proportional to 13,588.02, 20,378.66 and 7,667.51

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Solution

The fourth proportional to 13,588.02, 20,378.66 and 7,667.51 is: 11,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.02 : 20,378.66 = 7,667.51 : x
  2. Step 2: Convert to fraction form
    13,588.02/20,378.66 = 7,667.51/x
  3. Step 3: Cross multiply
    13,588.02x = 20,378.66 × 7,667.51
  4. Step 4: Simplify right side
    13,588.02x = 156,253,439.11
  5. Step 5: Solve for x
    x = 156,253,439.11/13,588.02
  6. Step 6: Final answer
    x = 11,499.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.