Home / 20,009.12-30,010.26-8,319.20

Finding the Fourth Proportional to 20,009.12, 30,010.26 and 8,319.20

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Solution

The fourth proportional to 20,009.12, 30,010.26 and 8,319.20 is: 12,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.12 : 30,010.26 = 8,319.20 : x
  2. Step 2: Convert to fraction form
    20,009.12/30,010.26 = 8,319.20/x
  3. Step 3: Cross multiply
    20,009.12x = 30,010.26 × 8,319.20
  4. Step 4: Simplify right side
    20,009.12x = 249,661,354.99
  5. Step 5: Solve for x
    x = 249,661,354.99/20,009.12
  6. Step 6: Final answer
    x = 12,477.38

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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.