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Finding the Fourth Proportional to 28,012, 38,655.04 and 16,074.24

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Solution

The fourth proportional to 28,012, 38,655.04 and 16,074.24 is: 22,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012 : 38,655.04 = 16,074.24 : x
  2. Step 2: Convert to fraction form
    28,012/38,655.04 = 16,074.24/x
  3. Step 3: Cross multiply
    28,012x = 38,655.04 × 16,074.24
  4. Step 4: Simplify right side
    28,012x = 621,350,390.17
  5. Step 5: Solve for x
    x = 621,350,390.17/28,012
  6. Step 6: Final answer
    x = 22,181.58

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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.