Home / 28,469.29-39,287.93-15,722.45

Finding the Fourth Proportional to 28,469.29, 39,287.93 and 15,722.45

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Solution

The fourth proportional to 28,469.29, 39,287.93 and 15,722.45 is: 21,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.29 : 39,287.93 = 15,722.45 : x
  2. Step 2: Convert to fraction form
    28,469.29/39,287.93 = 15,722.45/x
  3. Step 3: Cross multiply
    28,469.29x = 39,287.93 × 15,722.45
  4. Step 4: Simplify right side
    28,469.29x = 617,702,515.03
  5. Step 5: Solve for x
    x = 617,702,515.03/28,469.29
  6. Step 6: Final answer
    x = 21,697.15

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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.