Home / 21,911,555.10-30,238,836.20-12,121,830.62

Finding the Fourth Proportional to 21,911,555.10, 30,238,836.20 and 12,121,830.62

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Solution

The fourth proportional to 21,911,555.10, 30,238,836.20 and 12,121,830.62 is: 16,728,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911,555.10 : 30,238,836.20 = 12,121,830.62 : x
  2. Step 2: Convert to fraction form
    21,911,555.10/30,238,836.20 = 12,121,830.62/x
  3. Step 3: Cross multiply
    21,911,555.10x = 30,238,836.20 × 12,121,830.62
  4. Step 4: Simplify right side
    21,911,555.10x = 366,550,050,350,521.12
  5. Step 5: Solve for x
    x = 366,550,050,350,521.12/21,911,555.10
  6. Step 6: Final answer
    x = 16,728,618.70

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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.