Home / 18,718.40-28,077.32-5,570.84

Finding the Fourth Proportional to 18,718.40, 28,077.32 and 5,570.84

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Solution

The fourth proportional to 18,718.40, 28,077.32 and 5,570.84 is: 8,356.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.40 : 28,077.32 = 5,570.84 : x
  2. Step 2: Convert to fraction form
    18,718.40/28,077.32 = 5,570.84/x
  3. Step 3: Cross multiply
    18,718.40x = 28,077.32 × 5,570.84
  4. Step 4: Simplify right side
    18,718.40x = 156,414,257.35
  5. Step 5: Solve for x
    x = 156,414,257.35/18,718.40
  6. Step 6: Final answer
    x = 8,356.18

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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.