Home / 18,684,281.78-28,012,971.70-11,480,932.55

Finding the Fourth Proportional to 18,684,281.78, 28,012,971.70 and 11,480,932.55

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Solution

The fourth proportional to 18,684,281.78, 28,012,971.70 and 11,480,932.55 is: 17,213,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,281.78 : 28,012,971.70 = 11,480,932.55 : x
  2. Step 2: Convert to fraction form
    18,684,281.78/28,012,971.70 = 11,480,932.55/x
  3. Step 3: Cross multiply
    18,684,281.78x = 28,012,971.70 × 11,480,932.55
  4. Step 4: Simplify right side
    18,684,281.78x = 321,615,038,612,758.88
  5. Step 5: Solve for x
    x = 321,615,038,612,758.88/18,684,281.78
  6. Step 6: Final answer
    x = 17,213,133.61

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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.