Home / 31,416.21-47,131.29-10,362.78

Finding the Fourth Proportional to 31,416.21, 47,131.29 and 10,362.78

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Solution

The fourth proportional to 31,416.21, 47,131.29 and 10,362.78 is: 15,546.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.21 : 47,131.29 = 10,362.78 : x
  2. Step 2: Convert to fraction form
    31,416.21/47,131.29 = 10,362.78/x
  3. Step 3: Cross multiply
    31,416.21x = 47,131.29 × 10,362.78
  4. Step 4: Simplify right side
    31,416.21x = 488,411,189.39
  5. Step 5: Solve for x
    x = 488,411,189.39/31,416.21
  6. Step 6: Final answer
    x = 15,546.47

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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.