Home / 21,915,661.42-30,255,775.59-13,216,037.86

Finding the Fourth Proportional to 21,915,661.42, 30,255,775.59 and 13,216,037.86

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Solution

The fourth proportional to 21,915,661.42, 30,255,775.59 and 13,216,037.86 is: 18,245,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915,661.42 : 30,255,775.59 = 13,216,037.86 : x
  2. Step 2: Convert to fraction form
    21,915,661.42/30,255,775.59 = 13,216,037.86/x
  3. Step 3: Cross multiply
    21,915,661.42x = 30,255,775.59 × 13,216,037.86
  4. Step 4: Simplify right side
    21,915,661.42x = 399,861,475,681,103.81
  5. Step 5: Solve for x
    x = 399,861,475,681,103.81/21,915,661.42
  6. Step 6: Final answer
    x = 18,245,466.93

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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.