Home / 27,699.85-38,226.15-15,763.49

Finding the Fourth Proportional to 27,699.85, 38,226.15 and 15,763.49

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Solution

The fourth proportional to 27,699.85, 38,226.15 and 15,763.49 is: 21,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,699.85 : 38,226.15 = 15,763.49 : x
  2. Step 2: Convert to fraction form
    27,699.85/38,226.15 = 15,763.49/x
  3. Step 3: Cross multiply
    27,699.85x = 38,226.15 × 15,763.49
  4. Step 4: Simplify right side
    27,699.85x = 602,577,342.13
  5. Step 5: Solve for x
    x = 602,577,342.13/27,699.85
  6. Step 6: Final answer
    x = 21,753.81

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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.