Home / 15,045.18-20,762.10-8,330.67

Finding the Fourth Proportional to 15,045.18, 20,762.10 and 8,330.67

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Solution

The fourth proportional to 15,045.18, 20,762.10 and 8,330.67 is: 11,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.18 : 20,762.10 = 8,330.67 : x
  2. Step 2: Convert to fraction form
    15,045.18/20,762.10 = 8,330.67/x
  3. Step 3: Cross multiply
    15,045.18x = 20,762.10 × 8,330.67
  4. Step 4: Simplify right side
    15,045.18x = 172,962,103.94
  5. Step 5: Solve for x
    x = 172,962,103.94/15,045.18
  6. Step 6: Final answer
    x = 11,496.18

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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.