Home / 30,285.28-45,435.18-9,508.78

Finding the Fourth Proportional to 30,285.28, 45,435.18 and 9,508.78

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Solution

The fourth proportional to 30,285.28, 45,435.18 and 9,508.78 is: 14,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.28 : 45,435.18 = 9,508.78 : x
  2. Step 2: Convert to fraction form
    30,285.28/45,435.18 = 9,508.78/x
  3. Step 3: Cross multiply
    30,285.28x = 45,435.18 × 9,508.78
  4. Step 4: Simplify right side
    30,285.28x = 432,033,130.88
  5. Step 5: Solve for x
    x = 432,033,130.88/30,285.28
  6. Step 6: Final answer
    x = 14,265.45

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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.