Home / 21,461.21-32,178.49-8,965.92

Finding the Fourth Proportional to 21,461.21, 32,178.49 and 8,965.92

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Solution

The fourth proportional to 21,461.21, 32,178.49 and 8,965.92 is: 13,443.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.21 : 32,178.49 = 8,965.92 : x
  2. Step 2: Convert to fraction form
    21,461.21/32,178.49 = 8,965.92/x
  3. Step 3: Cross multiply
    21,461.21x = 32,178.49 × 8,965.92
  4. Step 4: Simplify right side
    21,461.21x = 288,509,722.23
  5. Step 5: Solve for x
    x = 288,509,722.23/21,461.21
  6. Step 6: Final answer
    x = 13,443.31

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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.