Home / 31,982.08-47,972.40-14,447.20

Finding the Fourth Proportional to 31,982.08, 47,972.40 and 14,447.20

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Solution

The fourth proportional to 31,982.08, 47,972.40 and 14,447.20 is: 21,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,982.08 : 47,972.40 = 14,447.20 : x
  2. Step 2: Convert to fraction form
    31,982.08/47,972.40 = 14,447.20/x
  3. Step 3: Cross multiply
    31,982.08x = 47,972.40 × 14,447.20
  4. Step 4: Simplify right side
    31,982.08x = 693,066,857.28
  5. Step 5: Solve for x
    x = 693,066,857.28/31,982.08
  6. Step 6: Final answer
    x = 21,670.47

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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.