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Finding the Fourth Proportional to 14,012.01, 21,029.88 and 6,621.78

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Solution

The fourth proportional to 14,012.01, 21,029.88 and 6,621.78 is: 9,938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,012.01 : 21,029.88 = 6,621.78 : x
  2. Step 2: Convert to fraction form
    14,012.01/21,029.88 = 6,621.78/x
  3. Step 3: Cross multiply
    14,012.01x = 21,029.88 × 6,621.78
  4. Step 4: Simplify right side
    14,012.01x = 139,255,238.79
  5. Step 5: Solve for x
    x = 139,255,238.79/14,012.01
  6. Step 6: Final answer
    x = 9,938.28

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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.