Home / 18,723.39-28,077.32-7,622.55

Finding the Fourth Proportional to 18,723.39, 28,077.32 and 7,622.55

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Solution

The fourth proportional to 18,723.39, 28,077.32 and 7,622.55 is: 11,430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.39 : 28,077.32 = 7,622.55 : x
  2. Step 2: Convert to fraction form
    18,723.39/28,077.32 = 7,622.55/x
  3. Step 3: Cross multiply
    18,723.39x = 28,077.32 × 7,622.55
  4. Step 4: Simplify right side
    18,723.39x = 214,020,737.45
  5. Step 5: Solve for x
    x = 214,020,737.45/18,723.39
  6. Step 6: Final answer
    x = 11,430.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.