Home / 21,180.16-29,232.13-11,751.76

Finding the Fourth Proportional to 21,180.16, 29,232.13 and 11,751.76

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Solution

The fourth proportional to 21,180.16, 29,232.13 and 11,751.76 is: 16,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.16 : 29,232.13 = 11,751.76 : x
  2. Step 2: Convert to fraction form
    21,180.16/29,232.13 = 11,751.76/x
  3. Step 3: Cross multiply
    21,180.16x = 29,232.13 × 11,751.76
  4. Step 4: Simplify right side
    21,180.16x = 343,528,917.29
  5. Step 5: Solve for x
    x = 343,528,917.29/21,180.16
  6. Step 6: Final answer
    x = 16,219.37

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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.