Home / 30,709.39-45,990.27-17,521.78

Finding the Fourth Proportional to 30,709.39, 45,990.27 and 17,521.78

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Solution

The fourth proportional to 30,709.39, 45,990.27 and 17,521.78 is: 26,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.39 : 45,990.27 = 17,521.78 : x
  2. Step 2: Convert to fraction form
    30,709.39/45,990.27 = 17,521.78/x
  3. Step 3: Cross multiply
    30,709.39x = 45,990.27 × 17,521.78
  4. Step 4: Simplify right side
    30,709.39x = 805,831,508.06
  5. Step 5: Solve for x
    x = 805,831,508.06/30,709.39
  6. Step 6: Final answer
    x = 26,240.56

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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.