Home / 19,800.96-27,326.88-11,420.16

Finding the Fourth Proportional to 19,800.96, 27,326.88 and 11,420.16

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Solution

The fourth proportional to 19,800.96, 27,326.88 and 11,420.16 is: 15,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.96 : 27,326.88 = 11,420.16 : x
  2. Step 2: Convert to fraction form
    19,800.96/27,326.88 = 11,420.16/x
  3. Step 3: Cross multiply
    19,800.96x = 27,326.88 × 11,420.16
  4. Step 4: Simplify right side
    19,800.96x = 312,077,341.90
  5. Step 5: Solve for x
    x = 312,077,341.90/19,800.96
  6. Step 6: Final answer
    x = 15,760.72

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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.