Home / 21,657.18-32,529.45-12,909.18

Finding the Fourth Proportional to 21,657.18, 32,529.45 and 12,909.18

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Solution

The fourth proportional to 21,657.18, 32,529.45 and 12,909.18 is: 19,389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.18 : 32,529.45 = 12,909.18 : x
  2. Step 2: Convert to fraction form
    21,657.18/32,529.45 = 12,909.18/x
  3. Step 3: Cross multiply
    21,657.18x = 32,529.45 × 12,909.18
  4. Step 4: Simplify right side
    21,657.18x = 419,928,525.35
  5. Step 5: Solve for x
    x = 419,928,525.35/21,657.18
  6. Step 6: Final answer
    x = 19,389.81

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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.