Home / 20,685.06-30,972.51-14,124.06

Finding the Fourth Proportional to 20,685.06, 30,972.51 and 14,124.06

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Solution

The fourth proportional to 20,685.06, 30,972.51 and 14,124.06 is: 21,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.06 : 30,972.51 = 14,124.06 : x
  2. Step 2: Convert to fraction form
    20,685.06/30,972.51 = 14,124.06/x
  3. Step 3: Cross multiply
    20,685.06x = 30,972.51 × 14,124.06
  4. Step 4: Simplify right side
    20,685.06x = 437,457,589.59
  5. Step 5: Solve for x
    x = 437,457,589.59/20,685.06
  6. Step 6: Final answer
    x = 21,148.48

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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.