Home / 10,433.90-14,390.40-9,172.28

Finding the Fourth Proportional to 10,433.90, 14,390.40 and 9,172.28

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Solution

The fourth proportional to 10,433.90, 14,390.40 and 9,172.28 is: 12,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,433.90 : 14,390.40 = 9,172.28 : x
  2. Step 2: Convert to fraction form
    10,433.90/14,390.40 = 9,172.28/x
  3. Step 3: Cross multiply
    10,433.90x = 14,390.40 × 9,172.28
  4. Step 4: Simplify right side
    10,433.90x = 131,992,814.09
  5. Step 5: Solve for x
    x = 131,992,814.09/10,433.90
  6. Step 6: Final answer
    x = 12,650.38

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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.