Home / 21,897,142.80-30,216,758.70-12,106,818.60

Finding the Fourth Proportional to 21,897,142.80, 30,216,758.70 and 12,106,818.60

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Solution

The fourth proportional to 21,897,142.80, 30,216,758.70 and 12,106,818.60 is: 16,706,691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,897,142.80 : 30,216,758.70 = 12,106,818.60 : x
  2. Step 2: Convert to fraction form
    21,897,142.80/30,216,758.70 = 12,106,818.60/x
  3. Step 3: Cross multiply
    21,897,142.80x = 30,216,758.70 × 12,106,818.60
  4. Step 4: Simplify right side
    21,897,142.80x = 365,828,816,192,959.50
  5. Step 5: Solve for x
    x = 365,828,816,192,959.50/21,897,142.80
  6. Step 6: Final answer
    x = 16,706,691.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.