Home / 20,081,420.80-30,122,131.20-18,695,737.60

Finding the Fourth Proportional to 20,081,420.80, 30,122,131.20 and 18,695,737.60

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Solution

The fourth proportional to 20,081,420.80, 30,122,131.20 and 18,695,737.60 is: 28,043,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081,420.80 : 30,122,131.20 = 18,695,737.60 : x
  2. Step 2: Convert to fraction form
    20,081,420.80/30,122,131.20 = 18,695,737.60/x
  3. Step 3: Cross multiply
    20,081,420.80x = 30,122,131.20 × 18,695,737.60
  4. Step 4: Simplify right side
    20,081,420.80x = 563,155,460,867,973.12
  5. Step 5: Solve for x
    x = 563,155,460,867,973.12/20,081,420.80
  6. Step 6: Final answer
    x = 28,043,606.40

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1.5x scale

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.