Home / 30,678.66-42,335.99-17,066.64

Finding the Fourth Proportional to 30,678.66, 42,335.99 and 17,066.64

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Solution

The fourth proportional to 30,678.66, 42,335.99 and 17,066.64 is: 23,551.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.66 : 42,335.99 = 17,066.64 : x
  2. Step 2: Convert to fraction form
    30,678.66/42,335.99 = 17,066.64/x
  3. Step 3: Cross multiply
    30,678.66x = 42,335.99 × 17,066.64
  4. Step 4: Simplify right side
    30,678.66x = 722,533,143.04
  5. Step 5: Solve for x
    x = 722,533,143.04/30,678.66
  6. Step 6: Final answer
    x = 23,551.65

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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.