Home / 21,915,669.18-30,255,786.28-13,216,045.62

Finding the Fourth Proportional to 21,915,669.18, 30,255,786.28 and 13,216,045.62

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Solution

The fourth proportional to 21,915,669.18, 30,255,786.28 and 13,216,045.62 is: 18,245,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915,669.18 : 30,255,786.28 = 13,216,045.62 : x
  2. Step 2: Convert to fraction form
    21,915,669.18/30,255,786.28 = 13,216,045.62/x
  3. Step 3: Cross multiply
    21,915,669.18x = 30,255,786.28 × 13,216,045.62
  4. Step 4: Simplify right side
    21,915,669.18x = 399,861,851,745,450.06
  5. Step 5: Solve for x
    x = 399,861,851,745,450.06/21,915,669.18
  6. Step 6: Final answer
    x = 18,245,477.63

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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.