Home / 20,440.42-30,663.59-7,291.62

Finding the Fourth Proportional to 20,440.42, 30,663.59 and 7,291.62

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Solution

The fourth proportional to 20,440.42, 30,663.59 and 7,291.62 is: 10,938.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.42 : 30,663.59 = 7,291.62 : x
  2. Step 2: Convert to fraction form
    20,440.42/30,663.59 = 7,291.62/x
  3. Step 3: Cross multiply
    20,440.42x = 30,663.59 × 7,291.62
  4. Step 4: Simplify right side
    20,440.42x = 223,587,246.12
  5. Step 5: Solve for x
    x = 223,587,246.12/20,440.42
  6. Step 6: Final answer
    x = 10,938.49

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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.