Home / 10,455.55-15,683.12-4,215.43

Finding the Fourth Proportional to 10,455.55, 15,683.12 and 4,215.43

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Solution

The fourth proportional to 10,455.55, 15,683.12 and 4,215.43 is: 6,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.55 : 15,683.12 = 4,215.43 : x
  2. Step 2: Convert to fraction form
    10,455.55/15,683.12 = 4,215.43/x
  3. Step 3: Cross multiply
    10,455.55x = 15,683.12 × 4,215.43
  4. Step 4: Simplify right side
    10,455.55x = 66,110,995.05
  5. Step 5: Solve for x
    x = 66,110,995.05/10,455.55
  6. Step 6: Final answer
    x = 6,323.06

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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.