Home / 10,640.98-15,975.57-9,090.94

Finding the Fourth Proportional to 10,640.98, 15,975.57 and 9,090.94

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Solution

The fourth proportional to 10,640.98, 15,975.57 and 9,090.94 is: 13,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.98 : 15,975.57 = 9,090.94 : x
  2. Step 2: Convert to fraction form
    10,640.98/15,975.57 = 9,090.94/x
  3. Step 3: Cross multiply
    10,640.98x = 15,975.57 × 9,090.94
  4. Step 4: Simplify right side
    10,640.98x = 145,232,971.06
  5. Step 5: Solve for x
    x = 145,232,971.06/10,640.98
  6. Step 6: Final answer
    x = 13,648.46

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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.