Home / 20,169.90-30,254.85-19,316.70

Finding the Fourth Proportional to 20,169.90, 30,254.85 and 19,316.70

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Solution

The fourth proportional to 20,169.90, 30,254.85 and 19,316.70 is: 28,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.90 : 30,254.85 = 19,316.70 : x
  2. Step 2: Convert to fraction form
    20,169.90/30,254.85 = 19,316.70/x
  3. Step 3: Cross multiply
    20,169.90x = 30,254.85 × 19,316.70
  4. Step 4: Simplify right side
    20,169.90x = 584,423,861.00
  5. Step 5: Solve for x
    x = 584,423,861.00/20,169.90
  6. Step 6: Final answer
    x = 28,975.05

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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.