Home / 30,281.21-45,423.38-9,219.62

Finding the Fourth Proportional to 30,281.21, 45,423.38 and 9,219.62

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Solution

The fourth proportional to 30,281.21, 45,423.38 and 9,219.62 is: 13,829.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.21 : 45,423.38 = 9,219.62 : x
  2. Step 2: Convert to fraction form
    30,281.21/45,423.38 = 9,219.62/x
  3. Step 3: Cross multiply
    30,281.21x = 45,423.38 × 9,219.62
  4. Step 4: Simplify right side
    30,281.21x = 418,786,439.32
  5. Step 5: Solve for x
    x = 418,786,439.32/30,281.21
  6. Step 6: Final answer
    x = 13,829.91

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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.