Home / 21,199.40-29,259.53-12,245.66

Finding the Fourth Proportional to 21,199.40, 29,259.53 and 12,245.66

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Solution

The fourth proportional to 21,199.40, 29,259.53 and 12,245.66 is: 16,901.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.40 : 29,259.53 = 12,245.66 : x
  2. Step 2: Convert to fraction form
    21,199.40/29,259.53 = 12,245.66/x
  3. Step 3: Cross multiply
    21,199.40x = 29,259.53 × 12,245.66
  4. Step 4: Simplify right side
    21,199.40x = 358,302,268.06
  5. Step 5: Solve for x
    x = 358,302,268.06/21,199.40
  6. Step 6: Final answer
    x = 16,901.53

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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.