Home / 28,837.12-43,255.68-11,315.20

Finding the Fourth Proportional to 28,837.12, 43,255.68 and 11,315.20

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Solution

The fourth proportional to 28,837.12, 43,255.68 and 11,315.20 is: 16,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,837.12 : 43,255.68 = 11,315.20 : x
  2. Step 2: Convert to fraction form
    28,837.12/43,255.68 = 11,315.20/x
  3. Step 3: Cross multiply
    28,837.12x = 43,255.68 × 11,315.20
  4. Step 4: Simplify right side
    28,837.12x = 489,446,670.34
  5. Step 5: Solve for x
    x = 489,446,670.34/28,837.12
  6. Step 6: Final answer
    x = 16,972.80

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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.