Home / 21,180.07-29,228.53-11,748.63

Finding the Fourth Proportional to 21,180.07, 29,228.53 and 11,748.63

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Solution

The fourth proportional to 21,180.07, 29,228.53 and 11,748.63 is: 16,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.07 : 29,228.53 = 11,748.63 : x
  2. Step 2: Convert to fraction form
    21,180.07/29,228.53 = 11,748.63/x
  3. Step 3: Cross multiply
    21,180.07x = 29,228.53 × 11,748.63
  4. Step 4: Simplify right side
    21,180.07x = 343,395,184.41
  5. Step 5: Solve for x
    x = 343,395,184.41/21,180.07
  6. Step 6: Final answer
    x = 16,213.13

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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.