Home / 14,215.86-21,311.60-7,970.76

Finding the Fourth Proportional to 14,215.86, 21,311.60 and 7,970.76

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Solution

The fourth proportional to 14,215.86, 21,311.60 and 7,970.76 is: 11,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.86 : 21,311.60 = 7,970.76 : x
  2. Step 2: Convert to fraction form
    14,215.86/21,311.60 = 7,970.76/x
  3. Step 3: Cross multiply
    14,215.86x = 21,311.60 × 7,970.76
  4. Step 4: Simplify right side
    14,215.86x = 169,869,608.96
  5. Step 5: Solve for x
    x = 169,869,608.96/14,215.86
  6. Step 6: Final answer
    x = 11,949.30

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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.