Home / 20,695,719.40-31,043,579.10-19,766,746.60

Finding the Fourth Proportional to 20,695,719.40, 31,043,579.10 and 19,766,746.60

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Solution

The fourth proportional to 20,695,719.40, 31,043,579.10 and 19,766,746.60 is: 29,650,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695,719.40 : 31,043,579.10 = 19,766,746.60 : x
  2. Step 2: Convert to fraction form
    20,695,719.40/31,043,579.10 = 19,766,746.60/x
  3. Step 3: Cross multiply
    20,695,719.40x = 31,043,579.10 × 19,766,746.60
  4. Step 4: Simplify right side
    20,695,719.40x = 613,630,561,626,756.12
  5. Step 5: Solve for x
    x = 613,630,561,626,756.12/20,695,719.40
  6. Step 6: Final answer
    x = 29,650,119.90

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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.