Home / 19,421.36-29,133.92-7,731.84

Finding the Fourth Proportional to 19,421.36, 29,133.92 and 7,731.84

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Solution

The fourth proportional to 19,421.36, 29,133.92 and 7,731.84 is: 11,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.36 : 29,133.92 = 7,731.84 : x
  2. Step 2: Convert to fraction form
    19,421.36/29,133.92 = 7,731.84/x
  3. Step 3: Cross multiply
    19,421.36x = 29,133.92 × 7,731.84
  4. Step 4: Simplify right side
    19,421.36x = 225,258,808.01
  5. Step 5: Solve for x
    x = 225,258,808.01/19,421.36
  6. Step 6: Final answer
    x = 11,598.51

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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.