Home / 20,215.58-30,332.19-7,077.38

Finding the Fourth Proportional to 20,215.58, 30,332.19 and 7,077.38

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Solution

The fourth proportional to 20,215.58, 30,332.19 and 7,077.38 is: 10,619.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.58 : 30,332.19 = 7,077.38 : x
  2. Step 2: Convert to fraction form
    20,215.58/30,332.19 = 7,077.38/x
  3. Step 3: Cross multiply
    20,215.58x = 30,332.19 × 7,077.38
  4. Step 4: Simplify right side
    20,215.58x = 214,672,434.86
  5. Step 5: Solve for x
    x = 214,672,434.86/20,215.58
  6. Step 6: Final answer
    x = 10,619.16

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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.