Home / 21,130.83-29,160.14-11,699.46

Finding the Fourth Proportional to 21,130.83, 29,160.14 and 11,699.46

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Solution

The fourth proportional to 21,130.83, 29,160.14 and 11,699.46 is: 16,145.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.83 : 29,160.14 = 11,699.46 : x
  2. Step 2: Convert to fraction form
    21,130.83/29,160.14 = 11,699.46/x
  3. Step 3: Cross multiply
    21,130.83x = 29,160.14 × 11,699.46
  4. Step 4: Simplify right side
    21,130.83x = 341,157,833.03
  5. Step 5: Solve for x
    x = 341,157,833.03/21,130.83
  6. Step 6: Final answer
    x = 16,145.03

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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.