Home / 15,769.08-21,741.12-12,926.16

Finding the Fourth Proportional to 15,769.08, 21,741.12 and 12,926.16

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Solution

The fourth proportional to 15,769.08, 21,741.12 and 12,926.16 is: 17,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.08 : 21,741.12 = 12,926.16 : x
  2. Step 2: Convert to fraction form
    15,769.08/21,741.12 = 12,926.16/x
  3. Step 3: Cross multiply
    15,769.08x = 21,741.12 × 12,926.16
  4. Step 4: Simplify right side
    15,769.08x = 281,029,195.70
  5. Step 5: Solve for x
    x = 281,029,195.70/15,769.08
  6. Step 6: Final answer
    x = 17,821.53

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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.