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Finding the Fourth Proportional to 28,444.80, 42,699.60 and 16,764.60

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Solution

The fourth proportional to 28,444.80, 42,699.60 and 16,764.60 is: 25,166.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,444.80 : 42,699.60 = 16,764.60 : x
  2. Step 2: Convert to fraction form
    28,444.80/42,699.60 = 16,764.60/x
  3. Step 3: Cross multiply
    28,444.80x = 42,699.60 × 16,764.60
  4. Step 4: Simplify right side
    28,444.80x = 715,841,714.16
  5. Step 5: Solve for x
    x = 715,841,714.16/28,444.80
  6. Step 6: Final answer
    x = 25,166.00

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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.