Home / 29,359.08-40,515.21-15,930.63

Finding the Fourth Proportional to 29,359.08, 40,515.21 and 15,930.63

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Solution

The fourth proportional to 29,359.08, 40,515.21 and 15,930.63 is: 21,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,359.08 : 40,515.21 = 15,930.63 : x
  2. Step 2: Convert to fraction form
    29,359.08/40,515.21 = 15,930.63/x
  3. Step 3: Cross multiply
    29,359.08x = 40,515.21 × 15,930.63
  4. Step 4: Simplify right side
    29,359.08x = 645,432,819.88
  5. Step 5: Solve for x
    x = 645,432,819.88/29,359.08
  6. Step 6: Final answer
    x = 21,984.10

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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.