Home / 20,071.16-30,110.12-7,421.66

Finding the Fourth Proportional to 20,071.16, 30,110.12 and 7,421.66

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Solution

The fourth proportional to 20,071.16, 30,110.12 and 7,421.66 is: 11,133.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.16 : 30,110.12 = 7,421.66 : x
  2. Step 2: Convert to fraction form
    20,071.16/30,110.12 = 7,421.66/x
  3. Step 3: Cross multiply
    20,071.16x = 30,110.12 × 7,421.66
  4. Step 4: Simplify right side
    20,071.16x = 223,466,885.54
  5. Step 5: Solve for x
    x = 223,466,885.54/20,071.16
  6. Step 6: Final answer
    x = 11,133.73

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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.