Home / 20,748.35-28,632.75-11,317.07

Finding the Fourth Proportional to 20,748.35, 28,632.75 and 11,317.07

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Solution

The fourth proportional to 20,748.35, 28,632.75 and 11,317.07 is: 15,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.35 : 28,632.75 = 11,317.07 : x
  2. Step 2: Convert to fraction form
    20,748.35/28,632.75 = 11,317.07/x
  3. Step 3: Cross multiply
    20,748.35x = 28,632.75 × 11,317.07
  4. Step 4: Simplify right side
    20,748.35x = 324,038,836.04
  5. Step 5: Solve for x
    x = 324,038,836.04/20,748.35
  6. Step 6: Final answer
    x = 15,617.57

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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.