Home / 30,539.12-42,143.46-17,110.32

Finding the Fourth Proportional to 30,539.12, 42,143.46 and 17,110.32

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Solution

The fourth proportional to 30,539.12, 42,143.46 and 17,110.32 is: 23,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,539.12 : 42,143.46 = 17,110.32 : x
  2. Step 2: Convert to fraction form
    30,539.12/42,143.46 = 17,110.32/x
  3. Step 3: Cross multiply
    30,539.12x = 42,143.46 × 17,110.32
  4. Step 4: Simplify right side
    30,539.12x = 721,088,086.51
  5. Step 5: Solve for x
    x = 721,088,086.51/30,539.12
  6. Step 6: Final answer
    x = 23,611.95

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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.