Home / 20,672.25-28,527.48-11,240.79

Finding the Fourth Proportional to 20,672.25, 28,527.48 and 11,240.79

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Solution

The fourth proportional to 20,672.25, 28,527.48 and 11,240.79 is: 15,512.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.25 : 28,527.48 = 11,240.79 : x
  2. Step 2: Convert to fraction form
    20,672.25/28,527.48 = 11,240.79/x
  3. Step 3: Cross multiply
    20,672.25x = 28,527.48 × 11,240.79
  4. Step 4: Simplify right side
    20,672.25x = 320,671,411.91
  5. Step 5: Solve for x
    x = 320,671,411.91/20,672.25
  6. Step 6: Final answer
    x = 15,512.17

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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.