Home / 21,628.80-32,461.43-8,490.39

Finding the Fourth Proportional to 21,628.80, 32,461.43 and 8,490.39

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Solution

The fourth proportional to 21,628.80, 32,461.43 and 8,490.39 is: 12,742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.80 : 32,461.43 = 8,490.39 : x
  2. Step 2: Convert to fraction form
    21,628.80/32,461.43 = 8,490.39/x
  3. Step 3: Cross multiply
    21,628.80x = 32,461.43 × 8,490.39
  4. Step 4: Simplify right side
    21,628.80x = 275,610,158.21
  5. Step 5: Solve for x
    x = 275,610,158.21/21,628.80
  6. Step 6: Final answer
    x = 12,742.74

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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.