Home / 20,470.95-30,702.99-5,681.37

Finding the Fourth Proportional to 20,470.95, 30,702.99 and 5,681.37

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Solution

The fourth proportional to 20,470.95, 30,702.99 and 5,681.37 is: 8,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.95 : 30,702.99 = 5,681.37 : x
  2. Step 2: Convert to fraction form
    20,470.95/30,702.99 = 5,681.37/x
  3. Step 3: Cross multiply
    20,470.95x = 30,702.99 × 5,681.37
  4. Step 4: Simplify right side
    20,470.95x = 174,435,046.30
  5. Step 5: Solve for x
    x = 174,435,046.30/20,470.95
  6. Step 6: Final answer
    x = 8,521.10

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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.