Home / 31,424.29-47,130.80-8,936.46

Finding the Fourth Proportional to 31,424.29, 47,130.80 and 8,936.46

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Solution

The fourth proportional to 31,424.29, 47,130.80 and 8,936.46 is: 13,403.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424.29 : 47,130.80 = 8,936.46 : x
  2. Step 2: Convert to fraction form
    31,424.29/47,130.80 = 8,936.46/x
  3. Step 3: Cross multiply
    31,424.29x = 47,130.80 × 8,936.46
  4. Step 4: Simplify right side
    31,424.29x = 421,182,464.29
  5. Step 5: Solve for x
    x = 421,182,464.29/31,424.29
  6. Step 6: Final answer
    x = 13,403.09

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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.