Home / 30,438.20-45,734.10-19,350.20

Finding the Fourth Proportional to 30,438.20, 45,734.10 and 19,350.20

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Solution

The fourth proportional to 30,438.20, 45,734.10 and 19,350.20 is: 29,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.20 : 45,734.10 = 19,350.20 : x
  2. Step 2: Convert to fraction form
    30,438.20/45,734.10 = 19,350.20/x
  3. Step 3: Cross multiply
    30,438.20x = 45,734.10 × 19,350.20
  4. Step 4: Simplify right side
    30,438.20x = 884,963,981.82
  5. Step 5: Solve for x
    x = 884,963,981.82/30,438.20
  6. Step 6: Final answer
    x = 29,074.12

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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.