Home / 20,665.13-30,929.85-14,649.66

Finding the Fourth Proportional to 20,665.13, 30,929.85 and 14,649.66

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Solution

The fourth proportional to 20,665.13, 30,929.85 and 14,649.66 is: 21,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.13 : 30,929.85 = 14,649.66 : x
  2. Step 2: Convert to fraction form
    20,665.13/30,929.85 = 14,649.66/x
  3. Step 3: Cross multiply
    20,665.13x = 30,929.85 × 14,649.66
  4. Step 4: Simplify right side
    20,665.13x = 453,111,786.35
  5. Step 5: Solve for x
    x = 453,111,786.35/20,665.13
  6. Step 6: Final answer
    x = 21,926.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.