Home / 28,109.96-42,169.26-9,384.20

Finding the Fourth Proportional to 28,109.96, 42,169.26 and 9,384.20

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Solution

The fourth proportional to 28,109.96, 42,169.26 and 9,384.20 is: 14,077.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.96 : 42,169.26 = 9,384.20 : x
  2. Step 2: Convert to fraction form
    28,109.96/42,169.26 = 9,384.20/x
  3. Step 3: Cross multiply
    28,109.96x = 42,169.26 × 9,384.20
  4. Step 4: Simplify right side
    28,109.96x = 395,724,769.69
  5. Step 5: Solve for x
    x = 395,724,769.69/28,109.96
  6. Step 6: Final answer
    x = 14,077.74

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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.