Home / 21,424.10-32,145.30-8,946.90

Finding the Fourth Proportional to 21,424.10, 32,145.30 and 8,946.90

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Solution

The fourth proportional to 21,424.10, 32,145.30 and 8,946.90 is: 13,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.10 : 32,145.30 = 8,946.90 : x
  2. Step 2: Convert to fraction form
    21,424.10/32,145.30 = 8,946.90/x
  3. Step 3: Cross multiply
    21,424.10x = 32,145.30 × 8,946.90
  4. Step 4: Simplify right side
    21,424.10x = 287,600,784.57
  5. Step 5: Solve for x
    x = 287,600,784.57/21,424.10
  6. Step 6: Final answer
    x = 13,424.17

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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.