Home / 15,282.30-21,098.31-11,690.64

Finding the Fourth Proportional to 15,282.30, 21,098.31 and 11,690.64

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Solution

The fourth proportional to 15,282.30, 21,098.31 and 11,690.64 is: 16,139.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.30 : 21,098.31 = 11,690.64 : x
  2. Step 2: Convert to fraction form
    15,282.30/21,098.31 = 11,690.64/x
  3. Step 3: Cross multiply
    15,282.30x = 21,098.31 × 11,690.64
  4. Step 4: Simplify right side
    15,282.30x = 246,652,746.82
  5. Step 5: Solve for x
    x = 246,652,746.82/15,282.30
  6. Step 6: Final answer
    x = 16,139.77

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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.