Home / 31,101.21-42,918.11-17,670.69

Finding the Fourth Proportional to 31,101.21, 42,918.11 and 17,670.69

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Solution

The fourth proportional to 31,101.21, 42,918.11 and 17,670.69 is: 24,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,101.21 : 42,918.11 = 17,670.69 : x
  2. Step 2: Convert to fraction form
    31,101.21/42,918.11 = 17,670.69/x
  3. Step 3: Cross multiply
    31,101.21x = 42,918.11 × 17,670.69
  4. Step 4: Simplify right side
    31,101.21x = 758,392,617.20
  5. Step 5: Solve for x
    x = 758,392,617.20/31,101.21
  6. Step 6: Final answer
    x = 24,384.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.