Home / 30,979.64-42,750.51-17,550.62

Finding the Fourth Proportional to 30,979.64, 42,750.51 and 17,550.62

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Solution

The fourth proportional to 30,979.64, 42,750.51 and 17,550.62 is: 24,219.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.64 : 42,750.51 = 17,550.62 : x
  2. Step 2: Convert to fraction form
    30,979.64/42,750.51 = 17,550.62/x
  3. Step 3: Cross multiply
    30,979.64x = 42,750.51 × 17,550.62
  4. Step 4: Simplify right side
    30,979.64x = 750,297,955.82
  5. Step 5: Solve for x
    x = 750,297,955.82/30,979.64
  6. Step 6: Final answer
    x = 24,219.07

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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.