Home / 12,618,921.80-18,928,382.70-7,575,926.60

Finding the Fourth Proportional to 12,618,921.80, 18,928,382.70 and 7,575,926.60

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Solution

The fourth proportional to 12,618,921.80, 18,928,382.70 and 7,575,926.60 is: 11,363,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,921.80 : 18,928,382.70 = 7,575,926.60 : x
  2. Step 2: Convert to fraction form
    12,618,921.80/18,928,382.70 = 7,575,926.60/x
  3. Step 3: Cross multiply
    12,618,921.80x = 18,928,382.70 × 7,575,926.60
  4. Step 4: Simplify right side
    12,618,921.80x = 143,400,037,991,909.81
  5. Step 5: Solve for x
    x = 143,400,037,991,909.81/12,618,921.80
  6. Step 6: Final answer
    x = 11,363,889.90

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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.