Home / 21,562.72-29,756.51-12,131.28

Finding the Fourth Proportional to 21,562.72, 29,756.51 and 12,131.28

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Solution

The fourth proportional to 21,562.72, 29,756.51 and 12,131.28 is: 16,741.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.72 : 29,756.51 = 12,131.28 : x
  2. Step 2: Convert to fraction form
    21,562.72/29,756.51 = 12,131.28/x
  3. Step 3: Cross multiply
    21,562.72x = 29,756.51 × 12,131.28
  4. Step 4: Simplify right side
    21,562.72x = 360,984,539.47
  5. Step 5: Solve for x
    x = 360,984,539.47/21,562.72
  6. Step 6: Final answer
    x = 16,741.14

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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.