Home / 18,719.95-28,085.99-5,572.43

Finding the Fourth Proportional to 18,719.95, 28,085.99 and 5,572.43

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Solution

The fourth proportional to 18,719.95, 28,085.99 and 5,572.43 is: 8,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.95 : 28,085.99 = 5,572.43 : x
  2. Step 2: Convert to fraction form
    18,719.95/28,085.99 = 5,572.43/x
  3. Step 3: Cross multiply
    18,719.95x = 28,085.99 × 5,572.43
  4. Step 4: Simplify right side
    18,719.95x = 156,507,227.19
  5. Step 5: Solve for x
    x = 156,507,227.19/18,719.95
  6. Step 6: Final answer
    x = 8,360.45

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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.