Home / 21,637.12-32,440.64-8,490.80

Finding the Fourth Proportional to 21,637.12, 32,440.64 and 8,490.80

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Solution

The fourth proportional to 21,637.12, 32,440.64 and 8,490.80 is: 12,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.12 : 32,440.64 = 8,490.80 : x
  2. Step 2: Convert to fraction form
    21,637.12/32,440.64 = 8,490.80/x
  3. Step 3: Cross multiply
    21,637.12x = 32,440.64 × 8,490.80
  4. Step 4: Simplify right side
    21,637.12x = 275,446,986.11
  5. Step 5: Solve for x
    x = 275,446,986.11/21,637.12
  6. Step 6: Final answer
    x = 12,730.30

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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.