Home / 28,369.57-39,149.69-15,622.50

Finding the Fourth Proportional to 28,369.57, 39,149.69 and 15,622.50

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Solution

The fourth proportional to 28,369.57, 39,149.69 and 15,622.50 is: 21,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.57 : 39,149.69 = 15,622.50 : x
  2. Step 2: Convert to fraction form
    28,369.57/39,149.69 = 15,622.50/x
  3. Step 3: Cross multiply
    28,369.57x = 39,149.69 × 15,622.50
  4. Step 4: Simplify right side
    28,369.57x = 611,616,032.03
  5. Step 5: Solve for x
    x = 611,616,032.03/28,369.57
  6. Step 6: Final answer
    x = 21,558.88

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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.