Home / 21,977,340-30,328,729.47-12,319,548

Finding the Fourth Proportional to 21,977,340, 30,328,729.47 and 12,319,548

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Solution

The fourth proportional to 21,977,340, 30,328,729.47 and 12,319,548 is: 17,000,976.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977,340 : 30,328,729.47 = 12,319,548 : x
  2. Step 2: Convert to fraction form
    21,977,340/30,328,729.47 = 12,319,548/x
  3. Step 3: Cross multiply
    21,977,340x = 30,328,729.47 × 12,319,548
  4. Step 4: Simplify right side
    21,977,340x = 373,636,238,484,679.56
  5. Step 5: Solve for x
    x = 373,636,238,484,679.56/21,977,340
  6. Step 6: Final answer
    x = 17,000,976.39

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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.