Home / 20,663.48-28,505.58-12,274.04

Finding the Fourth Proportional to 20,663.48, 28,505.58 and 12,274.04

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Solution

The fourth proportional to 20,663.48, 28,505.58 and 12,274.04 is: 16,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.48 : 28,505.58 = 12,274.04 : x
  2. Step 2: Convert to fraction form
    20,663.48/28,505.58 = 12,274.04/x
  3. Step 3: Cross multiply
    20,663.48x = 28,505.58 × 12,274.04
  4. Step 4: Simplify right side
    20,663.48x = 349,878,629.14
  5. Step 5: Solve for x
    x = 349,878,629.14/20,663.48
  6. Step 6: Final answer
    x = 16,932.22

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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.