Home / 20,968.88-28,949.04-13,904.92

Finding the Fourth Proportional to 20,968.88, 28,949.04 and 13,904.92

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Solution

The fourth proportional to 20,968.88, 28,949.04 and 13,904.92 is: 19,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.88 : 28,949.04 = 13,904.92 : x
  2. Step 2: Convert to fraction form
    20,968.88/28,949.04 = 13,904.92/x
  3. Step 3: Cross multiply
    20,968.88x = 28,949.04 × 13,904.92
  4. Step 4: Simplify right side
    20,968.88x = 402,534,085.28
  5. Step 5: Solve for x
    x = 402,534,085.28/20,968.88
  6. Step 6: Final answer
    x = 19,196.74

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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.