Home / 12,479.13-18,726.72-4,981.40

Finding the Fourth Proportional to 12,479.13, 18,726.72 and 4,981.40

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Solution

The fourth proportional to 12,479.13, 18,726.72 and 4,981.40 is: 7,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.13 : 18,726.72 = 4,981.40 : x
  2. Step 2: Convert to fraction form
    12,479.13/18,726.72 = 4,981.40/x
  3. Step 3: Cross multiply
    12,479.13x = 18,726.72 × 4,981.40
  4. Step 4: Simplify right side
    12,479.13x = 93,285,283.01
  5. Step 5: Solve for x
    x = 93,285,283.01/12,479.13
  6. Step 6: Final answer
    x = 7,475.30

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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.