Home / 27,690.32-38,215.85-15,755.53

Finding the Fourth Proportional to 27,690.32, 38,215.85 and 15,755.53

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Solution

The fourth proportional to 27,690.32, 38,215.85 and 15,755.53 is: 21,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.32 : 38,215.85 = 15,755.53 : x
  2. Step 2: Convert to fraction form
    27,690.32/38,215.85 = 15,755.53/x
  3. Step 3: Cross multiply
    27,690.32x = 38,215.85 × 15,755.53
  4. Step 4: Simplify right side
    27,690.32x = 602,110,892.37
  5. Step 5: Solve for x
    x = 602,110,892.37/27,690.32
  6. Step 6: Final answer
    x = 21,744.45

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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.