Home / 28,419.05-42,619.35-13,423.85

Finding the Fourth Proportional to 28,419.05, 42,619.35 and 13,423.85

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Solution

The fourth proportional to 28,419.05, 42,619.35 and 13,423.85 is: 20,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.05 : 42,619.35 = 13,423.85 : x
  2. Step 2: Convert to fraction form
    28,419.05/42,619.35 = 13,423.85/x
  3. Step 3: Cross multiply
    28,419.05x = 42,619.35 × 13,423.85
  4. Step 4: Simplify right side
    28,419.05x = 572,115,761.50
  5. Step 5: Solve for x
    x = 572,115,761.50/28,419.05
  6. Step 6: Final answer
    x = 20,131.42

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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.