Home / 21,760.31-30,026.96-12,807.27

Finding the Fourth Proportional to 21,760.31, 30,026.96 and 12,807.27

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Solution

The fourth proportional to 21,760.31, 30,026.96 and 12,807.27 is: 17,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.31 : 30,026.96 = 12,807.27 : x
  2. Step 2: Convert to fraction form
    21,760.31/30,026.96 = 12,807.27/x
  3. Step 3: Cross multiply
    21,760.31x = 30,026.96 × 12,807.27
  4. Step 4: Simplify right side
    21,760.31x = 384,563,416.02
  5. Step 5: Solve for x
    x = 384,563,416.02/21,760.31
  6. Step 6: Final answer
    x = 17,672.70

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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.