Home / 14,578.80-21,870.90-4,718.40

Finding the Fourth Proportional to 14,578.80, 21,870.90 and 4,718.40

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Solution

The fourth proportional to 14,578.80, 21,870.90 and 4,718.40 is: 7,078.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.80 : 21,870.90 = 4,718.40 : x
  2. Step 2: Convert to fraction form
    14,578.80/21,870.90 = 4,718.40/x
  3. Step 3: Cross multiply
    14,578.80x = 21,870.90 × 4,718.40
  4. Step 4: Simplify right side
    14,578.80x = 103,195,654.56
  5. Step 5: Solve for x
    x = 103,195,654.56/14,578.80
  6. Step 6: Final answer
    x = 7,078.47

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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.