Home / 21,221.01-29,283.55-11,659.03

Finding the Fourth Proportional to 21,221.01, 29,283.55 and 11,659.03

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Solution

The fourth proportional to 21,221.01, 29,283.55 and 11,659.03 is: 16,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.01 : 29,283.55 = 11,659.03 : x
  2. Step 2: Convert to fraction form
    21,221.01/29,283.55 = 11,659.03/x
  3. Step 3: Cross multiply
    21,221.01x = 29,283.55 × 11,659.03
  4. Step 4: Simplify right side
    21,221.01x = 341,417,685.60
  5. Step 5: Solve for x
    x = 341,417,685.60/21,221.01
  6. Step 6: Final answer
    x = 16,088.66

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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.