Home / 18,962.75-28,421.05-13,417.69

Finding the Fourth Proportional to 18,962.75, 28,421.05 and 13,417.69

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Solution

The fourth proportional to 18,962.75, 28,421.05 and 13,417.69 is: 20,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.75 : 28,421.05 = 13,417.69 : x
  2. Step 2: Convert to fraction form
    18,962.75/28,421.05 = 13,417.69/x
  3. Step 3: Cross multiply
    18,962.75x = 28,421.05 × 13,417.69
  4. Step 4: Simplify right side
    18,962.75x = 381,344,629.18
  5. Step 5: Solve for x
    x = 381,344,629.18/18,962.75
  6. Step 6: Final answer
    x = 20,110.20

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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.