Home / 11,315.34-15,625.68-7,289.18

Finding the Fourth Proportional to 11,315.34, 15,625.68 and 7,289.18

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Solution

The fourth proportional to 11,315.34, 15,625.68 and 7,289.18 is: 10,065.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.34 : 15,625.68 = 7,289.18 : x
  2. Step 2: Convert to fraction form
    11,315.34/15,625.68 = 7,289.18/x
  3. Step 3: Cross multiply
    11,315.34x = 15,625.68 × 7,289.18
  4. Step 4: Simplify right side
    11,315.34x = 113,898,316.01
  5. Step 5: Solve for x
    x = 113,898,316.01/11,315.34
  6. Step 6: Final answer
    x = 10,065.83

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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.