Home / 12,210,086.30-18,288,557.40-7,409,402.60

Finding the Fourth Proportional to 12,210,086.30, 18,288,557.40 and 7,409,402.60

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Solution

The fourth proportional to 12,210,086.30, 18,288,557.40 and 7,409,402.60 is: 11,097,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210,086.30 : 18,288,557.40 = 7,409,402.60 : x
  2. Step 2: Convert to fraction form
    12,210,086.30/18,288,557.40 = 7,409,402.60/x
  3. Step 3: Cross multiply
    12,210,086.30x = 18,288,557.40 × 7,409,402.60
  4. Step 4: Simplify right side
    12,210,086.30x = 135,507,284,749,809.22
  5. Step 5: Solve for x
    x = 135,507,284,749,809.22/12,210,086.30
  6. Step 6: Final answer
    x = 11,097,979.28

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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.