Home / 30,468.15-45,729.23-17,972.55

Finding the Fourth Proportional to 30,468.15, 45,729.23 and 17,972.55

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Solution

The fourth proportional to 30,468.15, 45,729.23 and 17,972.55 is: 26,974.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,468.15 : 45,729.23 = 17,972.55 : x
  2. Step 2: Convert to fraction form
    30,468.15/45,729.23 = 17,972.55/x
  3. Step 3: Cross multiply
    30,468.15x = 45,729.23 × 17,972.55
  4. Step 4: Simplify right side
    30,468.15x = 821,870,782.77
  5. Step 5: Solve for x
    x = 821,870,782.77/30,468.15
  6. Step 6: Final answer
    x = 26,974.75

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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.