Home / 21,069.20-29,077.02-12,119.51

Finding the Fourth Proportional to 21,069.20, 29,077.02 and 12,119.51

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Solution

The fourth proportional to 21,069.20, 29,077.02 and 12,119.51 is: 16,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.20 : 29,077.02 = 12,119.51 : x
  2. Step 2: Convert to fraction form
    21,069.20/29,077.02 = 12,119.51/x
  3. Step 3: Cross multiply
    21,069.20x = 29,077.02 × 12,119.51
  4. Step 4: Simplify right side
    21,069.20x = 352,399,089.28
  5. Step 5: Solve for x
    x = 352,399,089.28/21,069.20
  6. Step 6: Final answer
    x = 16,725.80

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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.