Home / 13,228.93-18,254.55-7,487.03

Finding the Fourth Proportional to 13,228.93, 18,254.55 and 7,487.03

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Solution

The fourth proportional to 13,228.93, 18,254.55 and 7,487.03 is: 10,331.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.93 : 18,254.55 = 7,487.03 : x
  2. Step 2: Convert to fraction form
    13,228.93/18,254.55 = 7,487.03/x
  3. Step 3: Cross multiply
    13,228.93x = 18,254.55 × 7,487.03
  4. Step 4: Simplify right side
    13,228.93x = 136,672,480.97
  5. Step 5: Solve for x
    x = 136,672,480.97/13,228.93
  6. Step 6: Final answer
    x = 10,331.33

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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.