Home / 21,274.96-29,340.34-13,317.93

Finding the Fourth Proportional to 21,274.96, 29,340.34 and 13,317.93

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Solution

The fourth proportional to 21,274.96, 29,340.34 and 13,317.93 is: 18,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.96 : 29,340.34 = 13,317.93 : x
  2. Step 2: Convert to fraction form
    21,274.96/29,340.34 = 13,317.93/x
  3. Step 3: Cross multiply
    21,274.96x = 29,340.34 × 13,317.93
  4. Step 4: Simplify right side
    21,274.96x = 390,752,594.30
  5. Step 5: Solve for x
    x = 390,752,594.30/21,274.96
  6. Step 6: Final answer
    x = 18,366.78

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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.