Home / 20,715.00-28,586.90-11,762.69

Finding the Fourth Proportional to 20,715.00, 28,586.90 and 11,762.69

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Solution

The fourth proportional to 20,715.00, 28,586.90 and 11,762.69 is: 16,232.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.00 : 28,586.90 = 11,762.69 : x
  2. Step 2: Convert to fraction form
    20,715.00/28,586.90 = 11,762.69/x
  3. Step 3: Cross multiply
    20,715.00x = 28,586.90 × 11,762.69
  4. Step 4: Simplify right side
    20,715.00x = 336,258,937.35
  5. Step 5: Solve for x
    x = 336,258,937.35/20,715.00
  6. Step 6: Final answer
    x = 16,232.63

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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.