Home / 19,903.28-29,855.21-5,111.87

Finding the Fourth Proportional to 19,903.28, 29,855.21 and 5,111.87

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Solution

The fourth proportional to 19,903.28, 29,855.21 and 5,111.87 is: 7,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.28 : 29,855.21 = 5,111.87 : x
  2. Step 2: Convert to fraction form
    19,903.28/29,855.21 = 5,111.87/x
  3. Step 3: Cross multiply
    19,903.28x = 29,855.21 × 5,111.87
  4. Step 4: Simplify right side
    19,903.28x = 152,615,862.24
  5. Step 5: Solve for x
    x = 152,615,862.24/19,903.28
  6. Step 6: Final answer
    x = 7,667.88

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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.