Home / 14,089.40-21,134.10-13,959.80

Finding the Fourth Proportional to 14,089.40, 21,134.10 and 13,959.80

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Solution

The fourth proportional to 14,089.40, 21,134.10 and 13,959.80 is: 20,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.40 : 21,134.10 = 13,959.80 : x
  2. Step 2: Convert to fraction form
    14,089.40/21,134.10 = 13,959.80/x
  3. Step 3: Cross multiply
    14,089.40x = 21,134.10 × 13,959.80
  4. Step 4: Simplify right side
    14,089.40x = 295,027,809.18
  5. Step 5: Solve for x
    x = 295,027,809.18/14,089.40
  6. Step 6: Final answer
    x = 20,939.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.