Home / 11,012.89-15,191.43-7,029.51

Finding the Fourth Proportional to 11,012.89, 15,191.43 and 7,029.51

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Solution

The fourth proportional to 11,012.89, 15,191.43 and 7,029.51 is: 9,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,012.89 : 15,191.43 = 7,029.51 : x
  2. Step 2: Convert to fraction form
    11,012.89/15,191.43 = 7,029.51/x
  3. Step 3: Cross multiply
    11,012.89x = 15,191.43 × 7,029.51
  4. Step 4: Simplify right side
    11,012.89x = 106,788,309.10
  5. Step 5: Solve for x
    x = 106,788,309.10/11,012.89
  6. Step 6: Final answer
    x = 9,696.67

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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.