Home / 20,699.96-28,577.58-15,845.54

Finding the Fourth Proportional to 20,699.96, 28,577.58 and 15,845.54

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Solution

The fourth proportional to 20,699.96, 28,577.58 and 15,845.54 is: 21,875.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.96 : 28,577.58 = 15,845.54 : x
  2. Step 2: Convert to fraction form
    20,699.96/28,577.58 = 15,845.54/x
  3. Step 3: Cross multiply
    20,699.96x = 28,577.58 × 15,845.54
  4. Step 4: Simplify right side
    20,699.96x = 452,827,186.99
  5. Step 5: Solve for x
    x = 452,827,186.99/20,699.96
  6. Step 6: Final answer
    x = 21,875.75

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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.