Home / 30,431.46-41,971.68-19,530.66

Finding the Fourth Proportional to 30,431.46, 41,971.68 and 19,530.66

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Solution

The fourth proportional to 30,431.46, 41,971.68 and 19,530.66 is: 26,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.46 : 41,971.68 = 19,530.66 : x
  2. Step 2: Convert to fraction form
    30,431.46/41,971.68 = 19,530.66/x
  3. Step 3: Cross multiply
    30,431.46x = 41,971.68 × 19,530.66
  4. Step 4: Simplify right side
    30,431.46x = 819,734,611.71
  5. Step 5: Solve for x
    x = 819,734,611.71/30,431.46
  6. Step 6: Final answer
    x = 26,937.08

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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.