Home / 13,531.36-18,671.28-7,944.16

Finding the Fourth Proportional to 13,531.36, 18,671.28 and 7,944.16

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Solution

The fourth proportional to 13,531.36, 18,671.28 and 7,944.16 is: 10,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.36 : 18,671.28 = 7,944.16 : x
  2. Step 2: Convert to fraction form
    13,531.36/18,671.28 = 7,944.16/x
  3. Step 3: Cross multiply
    13,531.36x = 18,671.28 × 7,944.16
  4. Step 4: Simplify right side
    13,531.36x = 148,327,635.72
  5. Step 5: Solve for x
    x = 148,327,635.72/13,531.36
  6. Step 6: Final answer
    x = 10,961.77

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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.