Home / 20,937.09-28,886.04-12,976.41

Finding the Fourth Proportional to 20,937.09, 28,886.04 and 12,976.41

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Solution

The fourth proportional to 20,937.09, 28,886.04 and 12,976.41 is: 17,903.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.09 : 28,886.04 = 12,976.41 : x
  2. Step 2: Convert to fraction form
    20,937.09/28,886.04 = 12,976.41/x
  3. Step 3: Cross multiply
    20,937.09x = 28,886.04 × 12,976.41
  4. Step 4: Simplify right side
    20,937.09x = 374,837,098.32
  5. Step 5: Solve for x
    x = 374,837,098.32/20,937.09
  6. Step 6: Final answer
    x = 17,903.02

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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.