Home / 10,460.79-15,690.99-4,220.64

Finding the Fourth Proportional to 10,460.79, 15,690.99 and 4,220.64

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Solution

The fourth proportional to 10,460.79, 15,690.99 and 4,220.64 is: 6,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,460.79 : 15,690.99 = 4,220.64 : x
  2. Step 2: Convert to fraction form
    10,460.79/15,690.99 = 4,220.64/x
  3. Step 3: Cross multiply
    10,460.79x = 15,690.99 × 4,220.64
  4. Step 4: Simplify right side
    10,460.79x = 66,226,020.03
  5. Step 5: Solve for x
    x = 66,226,020.03/10,460.79
  6. Step 6: Final answer
    x = 6,330.88

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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.