Home / 28,136.62-42,189.35-11,508.33

Finding the Fourth Proportional to 28,136.62, 42,189.35 and 11,508.33

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Solution

The fourth proportional to 28,136.62, 42,189.35 and 11,508.33 is: 17,256.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.62 : 42,189.35 = 11,508.33 : x
  2. Step 2: Convert to fraction form
    28,136.62/42,189.35 = 11,508.33/x
  3. Step 3: Cross multiply
    28,136.62x = 42,189.35 × 11,508.33
  4. Step 4: Simplify right side
    28,136.62x = 485,528,746.53
  5. Step 5: Solve for x
    x = 485,528,746.53/28,136.62
  6. Step 6: Final answer
    x = 17,256.12

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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.