Home / 10,091.70-13,985.55-9,950.76

Finding the Fourth Proportional to 10,091.70, 13,985.55 and 9,950.76

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Solution

The fourth proportional to 10,091.70, 13,985.55 and 9,950.76 is: 13,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.70 : 13,985.55 = 9,950.76 : x
  2. Step 2: Convert to fraction form
    10,091.70/13,985.55 = 9,950.76/x
  3. Step 3: Cross multiply
    10,091.70x = 13,985.55 × 9,950.76
  4. Step 4: Simplify right side
    10,091.70x = 139,166,851.52
  5. Step 5: Solve for x
    x = 139,166,851.52/10,091.70
  6. Step 6: Final answer
    x = 13,790.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.