Home / 10,890,979.20-16,336,468.80-7,307,798.40

Finding the Fourth Proportional to 10,890,979.20, 16,336,468.80 and 7,307,798.40

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Solution

The fourth proportional to 10,890,979.20, 16,336,468.80 and 7,307,798.40 is: 10,961,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,979.20 : 16,336,468.80 = 7,307,798.40 : x
  2. Step 2: Convert to fraction form
    10,890,979.20/16,336,468.80 = 7,307,798.40/x
  3. Step 3: Cross multiply
    10,890,979.20x = 16,336,468.80 × 7,307,798.40
  4. Step 4: Simplify right side
    10,890,979.20x = 119,383,620,558,289.94
  5. Step 5: Solve for x
    x = 119,383,620,558,289.94/10,890,979.20
  6. Step 6: Final answer
    x = 10,961,697.60

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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.