Home / 21,764.16-30,034.26-12,812.04

Finding the Fourth Proportional to 21,764.16, 30,034.26 and 12,812.04

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Solution

The fourth proportional to 21,764.16, 30,034.26 and 12,812.04 is: 17,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.16 : 30,034.26 = 12,812.04 : x
  2. Step 2: Convert to fraction form
    21,764.16/30,034.26 = 12,812.04/x
  3. Step 3: Cross multiply
    21,764.16x = 30,034.26 × 12,812.04
  4. Step 4: Simplify right side
    21,764.16x = 384,800,140.49
  5. Step 5: Solve for x
    x = 384,800,140.49/21,764.16
  6. Step 6: Final answer
    x = 17,680.45

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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.