Home / 20,695,821.60-31,043,732.40-20,359,898.40

Finding the Fourth Proportional to 20,695,821.60, 31,043,732.40 and 20,359,898.40

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Solution

The fourth proportional to 20,695,821.60, 31,043,732.40 and 20,359,898.40 is: 30,539,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695,821.60 : 31,043,732.40 = 20,359,898.40 : x
  2. Step 2: Convert to fraction form
    20,695,821.60/31,043,732.40 = 20,359,898.40/x
  3. Step 3: Cross multiply
    20,695,821.60x = 31,043,732.40 × 20,359,898.40
  4. Step 4: Simplify right side
    20,695,821.60x = 632,047,237,620,788.12
  5. Step 5: Solve for x
    x = 632,047,237,620,788.12/20,695,821.60
  6. Step 6: Final answer
    x = 30,539,847.60

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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.