Home / 27,735.92-38,275.32-15,640.28

Finding the Fourth Proportional to 27,735.92, 38,275.32 and 15,640.28

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Solution

The fourth proportional to 27,735.92, 38,275.32 and 15,640.28 is: 21,583.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,735.92 : 38,275.32 = 15,640.28 : x
  2. Step 2: Convert to fraction form
    27,735.92/38,275.32 = 15,640.28/x
  3. Step 3: Cross multiply
    27,735.92x = 38,275.32 × 15,640.28
  4. Step 4: Simplify right side
    27,735.92x = 598,636,721.89
  5. Step 5: Solve for x
    x = 598,636,721.89/27,735.92
  6. Step 6: Final answer
    x = 21,583.45

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1.5x scale

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.