Home / 20,926.66-28,878.66-12,543.16

Finding the Fourth Proportional to 20,926.66, 28,878.66 and 12,543.16

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Solution

The fourth proportional to 20,926.66, 28,878.66 and 12,543.16 is: 17,309.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.66 : 28,878.66 = 12,543.16 : x
  2. Step 2: Convert to fraction form
    20,926.66/28,878.66 = 12,543.16/x
  3. Step 3: Cross multiply
    20,926.66x = 28,878.66 × 12,543.16
  4. Step 4: Simplify right side
    20,926.66x = 362,229,652.97
  5. Step 5: Solve for x
    x = 362,229,652.97/20,926.66
  6. Step 6: Final answer
    x = 17,309.48

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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.