Home / 30,979.77-42,750.68-17,550.75

Finding the Fourth Proportional to 30,979.77, 42,750.68 and 17,550.75

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Solution

The fourth proportional to 30,979.77, 42,750.68 and 17,550.75 is: 24,219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.77 : 42,750.68 = 17,550.75 : x
  2. Step 2: Convert to fraction form
    30,979.77/42,750.68 = 17,550.75/x
  3. Step 3: Cross multiply
    30,979.77x = 42,750.68 × 17,550.75
  4. Step 4: Simplify right side
    30,979.77x = 750,306,283.26
  5. Step 5: Solve for x
    x = 750,306,283.26/30,979.77
  6. Step 6: Final answer
    x = 24,219.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.