Home / 14,809.42-20,438.90-8,521.80

Finding the Fourth Proportional to 14,809.42, 20,438.90 and 8,521.80

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Solution

The fourth proportional to 14,809.42, 20,438.90 and 8,521.80 is: 11,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,809.42 : 20,438.90 = 8,521.80 : x
  2. Step 2: Convert to fraction form
    14,809.42/20,438.90 = 8,521.80/x
  3. Step 3: Cross multiply
    14,809.42x = 20,438.90 × 8,521.80
  4. Step 4: Simplify right side
    14,809.42x = 174,176,218.02
  5. Step 5: Solve for x
    x = 174,176,218.02/14,809.42
  6. Step 6: Final answer
    x = 11,761.18

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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.