Home / 12,428.16-18,638.01-4,528.80

Finding the Fourth Proportional to 12,428.16, 18,638.01 and 4,528.80

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Solution

The fourth proportional to 12,428.16, 18,638.01 and 4,528.80 is: 6,791.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.16 : 18,638.01 = 4,528.80 : x
  2. Step 2: Convert to fraction form
    12,428.16/18,638.01 = 4,528.80/x
  3. Step 3: Cross multiply
    12,428.16x = 18,638.01 × 4,528.80
  4. Step 4: Simplify right side
    12,428.16x = 84,407,819.69
  5. Step 5: Solve for x
    x = 84,407,819.69/12,428.16
  6. Step 6: Final answer
    x = 6,791.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.