Home / 20,259.10-30,388.65-7,112.80

Finding the Fourth Proportional to 20,259.10, 30,388.65 and 7,112.80

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Solution

The fourth proportional to 20,259.10, 30,388.65 and 7,112.80 is: 10,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.10 : 30,388.65 = 7,112.80 : x
  2. Step 2: Convert to fraction form
    20,259.10/30,388.65 = 7,112.80/x
  3. Step 3: Cross multiply
    20,259.10x = 30,388.65 × 7,112.80
  4. Step 4: Simplify right side
    20,259.10x = 216,148,389.72
  5. Step 5: Solve for x
    x = 216,148,389.72/20,259.10
  6. Step 6: Final answer
    x = 10,669.20

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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.