Home / 20,868,000.10-31,302,000.15-20,112,172.90

Finding the Fourth Proportional to 20,868,000.10, 31,302,000.15 and 20,112,172.90

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Solution

The fourth proportional to 20,868,000.10, 31,302,000.15 and 20,112,172.90 is: 30,168,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,000.10 : 31,302,000.15 = 20,112,172.90 : x
  2. Step 2: Convert to fraction form
    20,868,000.10/31,302,000.15 = 20,112,172.90/x
  3. Step 3: Cross multiply
    20,868,000.10x = 31,302,000.15 × 20,112,172.90
  4. Step 4: Simplify right side
    20,868,000.10x = 629,551,239,132,625.88
  5. Step 5: Solve for x
    x = 629,551,239,132,625.88/20,868,000.10
  6. Step 6: Final answer
    x = 30,168,259.35

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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.