Home / 28,017,792.45-42,006,842.12-12,447,069.15

Finding the Fourth Proportional to 28,017,792.45, 42,006,842.12 and 12,447,069.15

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Solution

The fourth proportional to 28,017,792.45, 42,006,842.12 and 12,447,069.15 is: 18,661,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017,792.45 : 42,006,842.12 = 12,447,069.15 : x
  2. Step 2: Convert to fraction form
    28,017,792.45/42,006,842.12 = 12,447,069.15/x
  3. Step 3: Cross multiply
    28,017,792.45x = 42,006,842.12 × 12,447,069.15
  4. Step 4: Simplify right side
    28,017,792.45x = 522,862,068,578,537.31
  5. Step 5: Solve for x
    x = 522,862,068,578,537.31/28,017,792.45
  6. Step 6: Final answer
    x = 18,661,786.77

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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.