Home / 38,946.57-53,746.50-21,720.03

Finding the Fourth Proportional to 38,946.57, 53,746.50 and 21,720.03

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Solution

The fourth proportional to 38,946.57, 53,746.50 and 21,720.03 is: 29,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,946.57 : 53,746.50 = 21,720.03 : x
  2. Step 2: Convert to fraction form
    38,946.57/53,746.50 = 21,720.03/x
  3. Step 3: Cross multiply
    38,946.57x = 53,746.50 × 21,720.03
  4. Step 4: Simplify right side
    38,946.57x = 1,167,375,472.30
  5. Step 5: Solve for x
    x = 1,167,375,472.30/38,946.57
  6. Step 6: Final answer
    x = 29,973.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.