Home / 21,134.40-29,166.99-11,703.60

Finding the Fourth Proportional to 21,134.40, 29,166.99 and 11,703.60

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Solution

The fourth proportional to 21,134.40, 29,166.99 and 11,703.60 is: 16,151.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.40 : 29,166.99 = 11,703.60 : x
  2. Step 2: Convert to fraction form
    21,134.40/29,166.99 = 11,703.60/x
  3. Step 3: Cross multiply
    21,134.40x = 29,166.99 × 11,703.60
  4. Step 4: Simplify right side
    21,134.40x = 341,358,784.16
  5. Step 5: Solve for x
    x = 341,358,784.16/21,134.40
  6. Step 6: Final answer
    x = 16,151.81

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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.