Home / 21,244.20-29,313.15-12,045.78

Finding the Fourth Proportional to 21,244.20, 29,313.15 and 12,045.78

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Solution

The fourth proportional to 21,244.20, 29,313.15 and 12,045.78 is: 16,621.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.20 : 29,313.15 = 12,045.78 : x
  2. Step 2: Convert to fraction form
    21,244.20/29,313.15 = 12,045.78/x
  3. Step 3: Cross multiply
    21,244.20x = 29,313.15 × 12,045.78
  4. Step 4: Simplify right side
    21,244.20x = 353,099,756.01
  5. Step 5: Solve for x
    x = 353,099,756.01/21,244.20
  6. Step 6: Final answer
    x = 16,621.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.