Home / 10,157.85-14,010.30-7,170.57

Finding the Fourth Proportional to 10,157.85, 14,010.30 and 7,170.57

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Solution

The fourth proportional to 10,157.85, 14,010.30 and 7,170.57 is: 9,890.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,157.85 : 14,010.30 = 7,170.57 : x
  2. Step 2: Convert to fraction form
    10,157.85/14,010.30 = 7,170.57/x
  3. Step 3: Cross multiply
    10,157.85x = 14,010.30 × 7,170.57
  4. Step 4: Simplify right side
    10,157.85x = 100,461,836.87
  5. Step 5: Solve for x
    x = 100,461,836.87/10,157.85
  6. Step 6: Final answer
    x = 9,890.07

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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.