Home / 20,112.55-30,161.10-9,574.45

Finding the Fourth Proportional to 20,112.55, 30,161.10 and 9,574.45

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Solution

The fourth proportional to 20,112.55, 30,161.10 and 9,574.45 is: 14,358.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.55 : 30,161.10 = 9,574.45 : x
  2. Step 2: Convert to fraction form
    20,112.55/30,161.10 = 9,574.45/x
  3. Step 3: Cross multiply
    20,112.55x = 30,161.10 × 9,574.45
  4. Step 4: Simplify right side
    20,112.55x = 288,775,943.90
  5. Step 5: Solve for x
    x = 288,775,943.90/20,112.55
  6. Step 6: Final answer
    x = 14,358.00

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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.