Home / 13,931.64-20,896.44-6,537.78

Finding the Fourth Proportional to 13,931.64, 20,896.44 and 6,537.78

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Solution

The fourth proportional to 13,931.64, 20,896.44 and 6,537.78 is: 9,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.64 : 20,896.44 = 6,537.78 : x
  2. Step 2: Convert to fraction form
    13,931.64/20,896.44 = 6,537.78/x
  3. Step 3: Cross multiply
    13,931.64x = 20,896.44 × 6,537.78
  4. Step 4: Simplify right side
    13,931.64x = 136,616,327.50
  5. Step 5: Solve for x
    x = 136,616,327.50/13,931.64
  6. Step 6: Final answer
    x = 9,806.19

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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.