Home / 13,388.16-20,082.40-6,368.92

Finding the Fourth Proportional to 13,388.16, 20,082.40 and 6,368.92

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Solution

The fourth proportional to 13,388.16, 20,082.40 and 6,368.92 is: 9,553.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.16 : 20,082.40 = 6,368.92 : x
  2. Step 2: Convert to fraction form
    13,388.16/20,082.40 = 6,368.92/x
  3. Step 3: Cross multiply
    13,388.16x = 20,082.40 × 6,368.92
  4. Step 4: Simplify right side
    13,388.16x = 127,903,199.01
  5. Step 5: Solve for x
    x = 127,903,199.01/13,388.16
  6. Step 6: Final answer
    x = 9,553.46

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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.