Home / 31,455.26-47,199.29-12,749.12

Finding the Fourth Proportional to 31,455.26, 47,199.29 and 12,749.12

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Solution

The fourth proportional to 31,455.26, 47,199.29 and 12,749.12 is: 19,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.26 : 47,199.29 = 12,749.12 : x
  2. Step 2: Convert to fraction form
    31,455.26/47,199.29 = 12,749.12/x
  3. Step 3: Cross multiply
    31,455.26x = 47,199.29 × 12,749.12
  4. Step 4: Simplify right side
    31,455.26x = 601,749,112.38
  5. Step 5: Solve for x
    x = 601,749,112.38/31,455.26
  6. Step 6: Final answer
    x = 19,130.32

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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.