Home / 31,611.78-47,417.67-21,721.10

Finding the Fourth Proportional to 31,611.78, 47,417.67 and 21,721.10

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Solution

The fourth proportional to 31,611.78, 47,417.67 and 21,721.10 is: 32,581.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.78 : 47,417.67 = 21,721.10 : x
  2. Step 2: Convert to fraction form
    31,611.78/47,417.67 = 21,721.10/x
  3. Step 3: Cross multiply
    31,611.78x = 47,417.67 × 21,721.10
  4. Step 4: Simplify right side
    31,611.78x = 1,029,963,714.75
  5. Step 5: Solve for x
    x = 1,029,963,714.75/31,611.78
  6. Step 6: Final answer
    x = 32,581.64

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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.