Home / 18,905.95-28,363.16-5,759.35

Finding the Fourth Proportional to 18,905.95, 28,363.16 and 5,759.35

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Solution

The fourth proportional to 18,905.95, 28,363.16 and 5,759.35 is: 8,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.95 : 28,363.16 = 5,759.35 : x
  2. Step 2: Convert to fraction form
    18,905.95/28,363.16 = 5,759.35/x
  3. Step 3: Cross multiply
    18,905.95x = 28,363.16 × 5,759.35
  4. Step 4: Simplify right side
    18,905.95x = 163,353,365.55
  5. Step 5: Solve for x
    x = 163,353,365.55/18,905.95
  6. Step 6: Final answer
    x = 8,640.32

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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.