Home / 28,488.03-42,694.86-20,617.05

Finding the Fourth Proportional to 28,488.03, 42,694.86 and 20,617.05

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Solution

The fourth proportional to 28,488.03, 42,694.86 and 20,617.05 is: 30,898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.03 : 42,694.86 = 20,617.05 : x
  2. Step 2: Convert to fraction form
    28,488.03/42,694.86 = 20,617.05/x
  3. Step 3: Cross multiply
    28,488.03x = 42,694.86 × 20,617.05
  4. Step 4: Simplify right side
    28,488.03x = 880,242,063.36
  5. Step 5: Solve for x
    x = 880,242,063.36/28,488.03
  6. Step 6: Final answer
    x = 30,898.66

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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.