Home / 30,281.80-45,422.70-9,505.30

Finding the Fourth Proportional to 30,281.80, 45,422.70 and 9,505.30

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Solution

The fourth proportional to 30,281.80, 45,422.70 and 9,505.30 is: 14,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.80 : 45,422.70 = 9,505.30 : x
  2. Step 2: Convert to fraction form
    30,281.80/45,422.70 = 9,505.30/x
  3. Step 3: Cross multiply
    30,281.80x = 45,422.70 × 9,505.30
  4. Step 4: Simplify right side
    30,281.80x = 431,756,390.31
  5. Step 5: Solve for x
    x = 431,756,390.31/30,281.80
  6. Step 6: Final answer
    x = 14,257.95

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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.