Home / 21,188.24-29,240.96-12,807.44

Finding the Fourth Proportional to 21,188.24, 29,240.96 and 12,807.44

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Solution

The fourth proportional to 21,188.24, 29,240.96 and 12,807.44 is: 17,674.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.24 : 29,240.96 = 12,807.44 : x
  2. Step 2: Convert to fraction form
    21,188.24/29,240.96 = 12,807.44/x
  3. Step 3: Cross multiply
    21,188.24x = 29,240.96 × 12,807.44
  4. Step 4: Simplify right side
    21,188.24x = 374,501,840.74
  5. Step 5: Solve for x
    x = 374,501,840.74/21,188.24
  6. Step 6: Final answer
    x = 17,674.99

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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.