Home / 10,266.40-15,400.86-4,421.80

Finding the Fourth Proportional to 10,266.40, 15,400.86 and 4,421.80

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Solution

The fourth proportional to 10,266.40, 15,400.86 and 4,421.80 is: 6,633.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,266.40 : 15,400.86 = 4,421.80 : x
  2. Step 2: Convert to fraction form
    10,266.40/15,400.86 = 4,421.80/x
  3. Step 3: Cross multiply
    10,266.40x = 15,400.86 × 4,421.80
  4. Step 4: Simplify right side
    10,266.40x = 68,099,522.75
  5. Step 5: Solve for x
    x = 68,099,522.75/10,266.40
  6. Step 6: Final answer
    x = 6,633.24

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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.