Home / 21,815.15-32,739.03-8,490.25

Finding the Fourth Proportional to 21,815.15, 32,739.03 and 8,490.25

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Solution

The fourth proportional to 21,815.15, 32,739.03 and 8,490.25 is: 12,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.15 : 32,739.03 = 8,490.25 : x
  2. Step 2: Convert to fraction form
    21,815.15/32,739.03 = 8,490.25/x
  3. Step 3: Cross multiply
    21,815.15x = 32,739.03 × 8,490.25
  4. Step 4: Simplify right side
    21,815.15x = 277,962,549.46
  5. Step 5: Solve for x
    x = 277,962,549.46/21,815.15
  6. Step 6: Final answer
    x = 12,741.72

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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.