Home / 30,299.95-45,445.60-9,520.75

Finding the Fourth Proportional to 30,299.95, 45,445.60 and 9,520.75

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Solution

The fourth proportional to 30,299.95, 45,445.60 and 9,520.75 is: 14,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,299.95 : 45,445.60 = 9,520.75 : x
  2. Step 2: Convert to fraction form
    30,299.95/45,445.60 = 9,520.75/x
  3. Step 3: Cross multiply
    30,299.95x = 45,445.60 × 9,520.75
  4. Step 4: Simplify right side
    30,299.95x = 432,676,196.20
  5. Step 5: Solve for x
    x = 432,676,196.20/30,299.95
  6. Step 6: Final answer
    x = 14,279.77

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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.