Home / 38,718.11-53,430.66-21,721.99

Finding the Fourth Proportional to 38,718.11, 53,430.66 and 21,721.99

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Solution

The fourth proportional to 38,718.11, 53,430.66 and 21,721.99 is: 29,976.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718.11 : 53,430.66 = 21,721.99 : x
  2. Step 2: Convert to fraction form
    38,718.11/53,430.66 = 21,721.99/x
  3. Step 3: Cross multiply
    38,718.11x = 53,430.66 × 21,721.99
  4. Step 4: Simplify right side
    38,718.11x = 1,160,620,164.83
  5. Step 5: Solve for x
    x = 1,160,620,164.83/38,718.11
  6. Step 6: Final answer
    x = 29,976.16

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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.