Home / 12,356,519.60-18,534,779.40-10,215,009.20

Finding the Fourth Proportional to 12,356,519.60, 18,534,779.40 and 10,215,009.20

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Solution

The fourth proportional to 12,356,519.60, 18,534,779.40 and 10,215,009.20 is: 15,322,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,519.60 : 18,534,779.40 = 10,215,009.20 : x
  2. Step 2: Convert to fraction form
    12,356,519.60/18,534,779.40 = 10,215,009.20/x
  3. Step 3: Cross multiply
    12,356,519.60x = 18,534,779.40 × 10,215,009.20
  4. Step 4: Simplify right side
    12,356,519.60x = 189,332,942,090,970.44
  5. Step 5: Solve for x
    x = 189,332,942,090,970.44/12,356,519.60
  6. Step 6: Final answer
    x = 15,322,513.80

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Similar ratio
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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.