Home / 19,112.52-28,679.70-7,424.22

Finding the Fourth Proportional to 19,112.52, 28,679.70 and 7,424.22

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Solution

The fourth proportional to 19,112.52, 28,679.70 and 7,424.22 is: 11,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.52 : 28,679.70 = 7,424.22 : x
  2. Step 2: Convert to fraction form
    19,112.52/28,679.70 = 7,424.22/x
  3. Step 3: Cross multiply
    19,112.52x = 28,679.70 × 7,424.22
  4. Step 4: Simplify right side
    19,112.52x = 212,924,402.33
  5. Step 5: Solve for x
    x = 212,924,402.33/19,112.52
  6. Step 6: Final answer
    x = 11,140.57

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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.