Home / 39,712.90-54,803.86-21,809.06

Finding the Fourth Proportional to 39,712.90, 54,803.86 and 21,809.06

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Solution

The fourth proportional to 39,712.90, 54,803.86 and 21,809.06 is: 30,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.90 : 54,803.86 = 21,809.06 : x
  2. Step 2: Convert to fraction form
    39,712.90/54,803.86 = 21,809.06/x
  3. Step 3: Cross multiply
    39,712.90x = 54,803.86 × 21,809.06
  4. Step 4: Simplify right side
    39,712.90x = 1,195,220,670.97
  5. Step 5: Solve for x
    x = 1,195,220,670.97/39,712.90
  6. Step 6: Final answer
    x = 30,096.53

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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.