Home / 28,138.05-42,227.82-13,347.01

Finding the Fourth Proportional to 28,138.05, 42,227.82 and 13,347.01

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Solution

The fourth proportional to 28,138.05, 42,227.82 and 13,347.01 is: 20,030.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.05 : 42,227.82 = 13,347.01 : x
  2. Step 2: Convert to fraction form
    28,138.05/42,227.82 = 13,347.01/x
  3. Step 3: Cross multiply
    28,138.05x = 42,227.82 × 13,347.01
  4. Step 4: Simplify right side
    28,138.05x = 563,615,135.82
  5. Step 5: Solve for x
    x = 563,615,135.82/28,138.05
  6. Step 6: Final answer
    x = 20,030.36

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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.