Home / 21,740.96-29,969.52-17,917.76

Finding the Fourth Proportional to 21,740.96, 29,969.52 and 17,917.76

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Solution

The fourth proportional to 21,740.96, 29,969.52 and 17,917.76 is: 24,699.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.96 : 29,969.52 = 17,917.76 : x
  2. Step 2: Convert to fraction form
    21,740.96/29,969.52 = 17,917.76/x
  3. Step 3: Cross multiply
    21,740.96x = 29,969.52 × 17,917.76
  4. Step 4: Simplify right side
    21,740.96x = 536,986,666.68
  5. Step 5: Solve for x
    x = 536,986,666.68/21,740.96
  6. Step 6: Final answer
    x = 24,699.31

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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.