Home / 20,934.48-28,886.79-12,973.80

Finding the Fourth Proportional to 20,934.48, 28,886.79 and 12,973.80

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Solution

The fourth proportional to 20,934.48, 28,886.79 and 12,973.80 is: 17,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.48 : 28,886.79 = 12,973.80 : x
  2. Step 2: Convert to fraction form
    20,934.48/28,886.79 = 12,973.80/x
  3. Step 3: Cross multiply
    20,934.48x = 28,886.79 × 12,973.80
  4. Step 4: Simplify right side
    20,934.48x = 374,771,436.10
  5. Step 5: Solve for x
    x = 374,771,436.10/20,934.48
  6. Step 6: Final answer
    x = 17,902.11

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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.