Home / 19,100.09-28,656.83-7,421.51

Finding the Fourth Proportional to 19,100.09, 28,656.83 and 7,421.51

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Solution

The fourth proportional to 19,100.09, 28,656.83 and 7,421.51 is: 11,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.09 : 28,656.83 = 7,421.51 : x
  2. Step 2: Convert to fraction form
    19,100.09/28,656.83 = 7,421.51/x
  3. Step 3: Cross multiply
    19,100.09x = 28,656.83 × 7,421.51
  4. Step 4: Simplify right side
    19,100.09x = 212,677,040.61
  5. Step 5: Solve for x
    x = 212,677,040.61/19,100.09
  6. Step 6: Final answer
    x = 11,134.87

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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.