Home / 27,739.87-38,278.27-15,802.49

Finding the Fourth Proportional to 27,739.87, 38,278.27 and 15,802.49

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Solution

The fourth proportional to 27,739.87, 38,278.27 and 15,802.49 is: 21,805.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.87 : 38,278.27 = 15,802.49 : x
  2. Step 2: Convert to fraction form
    27,739.87/38,278.27 = 15,802.49/x
  3. Step 3: Cross multiply
    27,739.87x = 38,278.27 × 15,802.49
  4. Step 4: Simplify right side
    27,739.87x = 604,892,094.34
  5. Step 5: Solve for x
    x = 604,892,094.34/27,739.87
  6. Step 6: Final answer
    x = 21,805.88

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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.