Home / 21,133.68-29,166.12-11,703.12

Finding the Fourth Proportional to 21,133.68, 29,166.12 and 11,703.12

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Solution

The fourth proportional to 21,133.68, 29,166.12 and 11,703.12 is: 16,151.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.68 : 29,166.12 = 11,703.12 : x
  2. Step 2: Convert to fraction form
    21,133.68/29,166.12 = 11,703.12/x
  3. Step 3: Cross multiply
    21,133.68x = 29,166.12 × 11,703.12
  4. Step 4: Simplify right side
    21,133.68x = 341,334,602.29
  5. Step 5: Solve for x
    x = 341,334,602.29/21,133.68
  6. Step 6: Final answer
    x = 16,151.21

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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.