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Finding the Fourth Proportional to 28,657.08, 42,922.44 and 22,407.12

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Solution

The fourth proportional to 28,657.08, 42,922.44 and 22,407.12 is: 33,561.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.08 : 42,922.44 = 22,407.12 : x
  2. Step 2: Convert to fraction form
    28,657.08/42,922.44 = 22,407.12/x
  3. Step 3: Cross multiply
    28,657.08x = 42,922.44 × 22,407.12
  4. Step 4: Simplify right side
    28,657.08x = 961,768,263.77
  5. Step 5: Solve for x
    x = 961,768,263.77/28,657.08
  6. Step 6: Final answer
    x = 33,561.28

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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.