Home / 15,001.20-20,705.66-8,628.50

Finding the Fourth Proportional to 15,001.20, 20,705.66 and 8,628.50

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Solution

The fourth proportional to 15,001.20, 20,705.66 and 8,628.50 is: 11,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.20 : 20,705.66 = 8,628.50 : x
  2. Step 2: Convert to fraction form
    15,001.20/20,705.66 = 8,628.50/x
  3. Step 3: Cross multiply
    15,001.20x = 20,705.66 × 8,628.50
  4. Step 4: Simplify right side
    15,001.20x = 178,658,787.31
  5. Step 5: Solve for x
    x = 178,658,787.31/15,001.20
  6. Step 6: Final answer
    x = 11,909.63

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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.