Home / 20,632.63-28,479.51-13,180.63

Finding the Fourth Proportional to 20,632.63, 28,479.51 and 13,180.63

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Solution

The fourth proportional to 20,632.63, 28,479.51 and 13,180.63 is: 18,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.63 : 28,479.51 = 13,180.63 : x
  2. Step 2: Convert to fraction form
    20,632.63/28,479.51 = 13,180.63/x
  3. Step 3: Cross multiply
    20,632.63x = 28,479.51 × 13,180.63
  4. Step 4: Simplify right side
    20,632.63x = 375,377,675.59
  5. Step 5: Solve for x
    x = 375,377,675.59/20,632.63
  6. Step 6: Final answer
    x = 18,193.40

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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.