Home / 21,062,706.40-31,594,059.60-18,671,221.90

Finding the Fourth Proportional to 21,062,706.40, 31,594,059.60 and 18,671,221.90

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Solution

The fourth proportional to 21,062,706.40, 31,594,059.60 and 18,671,221.90 is: 28,006,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,706.40 : 31,594,059.60 = 18,671,221.90 : x
  2. Step 2: Convert to fraction form
    21,062,706.40/31,594,059.60 = 18,671,221.90/x
  3. Step 3: Cross multiply
    21,062,706.40x = 31,594,059.60 × 18,671,221.90
  4. Step 4: Simplify right side
    21,062,706.40x = 589,899,697,513,425.25
  5. Step 5: Solve for x
    x = 589,899,697,513,425.25/21,062,706.40
  6. Step 6: Final answer
    x = 28,006,832.85

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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.