Home / 20,718.95-31,079.51-5,930.05

Finding the Fourth Proportional to 20,718.95, 31,079.51 and 5,930.05

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Solution

The fourth proportional to 20,718.95, 31,079.51 and 5,930.05 is: 8,895.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.95 : 31,079.51 = 5,930.05 : x
  2. Step 2: Convert to fraction form
    20,718.95/31,079.51 = 5,930.05/x
  3. Step 3: Cross multiply
    20,718.95x = 31,079.51 × 5,930.05
  4. Step 4: Simplify right side
    20,718.95x = 184,303,048.28
  5. Step 5: Solve for x
    x = 184,303,048.28/20,718.95
  6. Step 6: Final answer
    x = 8,895.39

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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.