Home / 12,490,858.80-18,736,288.20-9,653,007.60

Finding the Fourth Proportional to 12,490,858.80, 18,736,288.20 and 9,653,007.60

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Solution

The fourth proportional to 12,490,858.80, 18,736,288.20 and 9,653,007.60 is: 14,479,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490,858.80 : 18,736,288.20 = 9,653,007.60 : x
  2. Step 2: Convert to fraction form
    12,490,858.80/18,736,288.20 = 9,653,007.60/x
  3. Step 3: Cross multiply
    12,490,858.80x = 18,736,288.20 × 9,653,007.60
  4. Step 4: Simplify right side
    12,490,858.80x = 180,861,532,390,390.31
  5. Step 5: Solve for x
    x = 180,861,532,390,390.31/12,490,858.80
  6. Step 6: Final answer
    x = 14,479,511.40

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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.