Home / 20,230,845.60-30,346,268.40-13,428,400.80

Finding the Fourth Proportional to 20,230,845.60, 30,346,268.40 and 13,428,400.80

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Solution

The fourth proportional to 20,230,845.60, 30,346,268.40 and 13,428,400.80 is: 20,142,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230,845.60 : 30,346,268.40 = 13,428,400.80 : x
  2. Step 2: Convert to fraction form
    20,230,845.60/30,346,268.40 = 13,428,400.80/x
  3. Step 3: Cross multiply
    20,230,845.60x = 30,346,268.40 × 13,428,400.80
  4. Step 4: Simplify right side
    20,230,845.60x = 407,501,854,859,574.75
  5. Step 5: Solve for x
    x = 407,501,854,859,574.75/20,230,845.60
  6. Step 6: Final answer
    x = 20,142,601.20

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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.