Home / 28,251.48-42,347.15-13,429.09

Finding the Fourth Proportional to 28,251.48, 42,347.15 and 13,429.09

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Solution

The fourth proportional to 28,251.48, 42,347.15 and 13,429.09 is: 20,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.48 : 42,347.15 = 13,429.09 : x
  2. Step 2: Convert to fraction form
    28,251.48/42,347.15 = 13,429.09/x
  3. Step 3: Cross multiply
    28,251.48x = 42,347.15 × 13,429.09
  4. Step 4: Simplify right side
    28,251.48x = 568,683,800.28
  5. Step 5: Solve for x
    x = 568,683,800.28/28,251.48
  6. Step 6: Final answer
    x = 20,129.34

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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.