Home / 21,032.76-29,028.36-13,861.68

Finding the Fourth Proportional to 21,032.76, 29,028.36 and 13,861.68

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Solution

The fourth proportional to 21,032.76, 29,028.36 and 13,861.68 is: 19,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.76 : 29,028.36 = 13,861.68 : x
  2. Step 2: Convert to fraction form
    21,032.76/29,028.36 = 13,861.68/x
  3. Step 3: Cross multiply
    21,032.76x = 29,028.36 × 13,861.68
  4. Step 4: Simplify right side
    21,032.76x = 402,381,837.24
  5. Step 5: Solve for x
    x = 402,381,837.24/21,032.76
  6. Step 6: Final answer
    x = 19,131.20

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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.