Home / 21,190.65-29,244.47-12,238.53

Finding the Fourth Proportional to 21,190.65, 29,244.47 and 12,238.53

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Solution

The fourth proportional to 21,190.65, 29,244.47 and 12,238.53 is: 16,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.65 : 29,244.47 = 12,238.53 : x
  2. Step 2: Convert to fraction form
    21,190.65/29,244.47 = 12,238.53/x
  3. Step 3: Cross multiply
    21,190.65x = 29,244.47 × 12,238.53
  4. Step 4: Simplify right side
    21,190.65x = 357,909,262.24
  5. Step 5: Solve for x
    x = 357,909,262.24/21,190.65
  6. Step 6: Final answer
    x = 16,889.96

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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.