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Finding the Fourth Proportional to 30,019.54, 45,028.54 and 9,756.18

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Solution

The fourth proportional to 30,019.54, 45,028.54 and 9,756.18 is: 14,634.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.54 : 45,028.54 = 9,756.18 : x
  2. Step 2: Convert to fraction form
    30,019.54/45,028.54 = 9,756.18/x
  3. Step 3: Cross multiply
    30,019.54x = 45,028.54 × 9,756.18
  4. Step 4: Simplify right side
    30,019.54x = 439,306,726.55
  5. Step 5: Solve for x
    x = 439,306,726.55/30,019.54
  6. Step 6: Final answer
    x = 14,634.02

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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.