Home / 31,670.36-47,510.40-10,889

Finding the Fourth Proportional to 31,670.36, 47,510.40 and 10,889

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Solution

The fourth proportional to 31,670.36, 47,510.40 and 10,889 is: 16,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,670.36 : 47,510.40 = 10,889 : x
  2. Step 2: Convert to fraction form
    31,670.36/47,510.40 = 10,889/x
  3. Step 3: Cross multiply
    31,670.36x = 47,510.40 × 10,889
  4. Step 4: Simplify right side
    31,670.36x = 517,340,745.60
  5. Step 5: Solve for x
    x = 517,340,745.60/31,670.36
  6. Step 6: Final answer
    x = 16,335.17

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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.