Home / 21,393.66-29,518.25-12,893.52

Finding the Fourth Proportional to 21,393.66, 29,518.25 and 12,893.52

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Solution

The fourth proportional to 21,393.66, 29,518.25 and 12,893.52 is: 17,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.66 : 29,518.25 = 12,893.52 : x
  2. Step 2: Convert to fraction form
    21,393.66/29,518.25 = 12,893.52/x
  3. Step 3: Cross multiply
    21,393.66x = 29,518.25 × 12,893.52
  4. Step 4: Simplify right side
    21,393.66x = 380,594,082.27
  5. Step 5: Solve for x
    x = 380,594,082.27/21,393.66
  6. Step 6: Final answer
    x = 17,790.04

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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.