Home / 11,191,192.80-16,786,789.20-7,789,970.40

Finding the Fourth Proportional to 11,191,192.80, 16,786,789.20 and 7,789,970.40

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Solution

The fourth proportional to 11,191,192.80, 16,786,789.20 and 7,789,970.40 is: 11,684,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191,192.80 : 16,786,789.20 = 7,789,970.40 : x
  2. Step 2: Convert to fraction form
    11,191,192.80/16,786,789.20 = 7,789,970.40/x
  3. Step 3: Cross multiply
    11,191,192.80x = 16,786,789.20 × 7,789,970.40
  4. Step 4: Simplify right side
    11,191,192.80x = 130,768,590,979,039.69
  5. Step 5: Solve for x
    x = 130,768,590,979,039.69/11,191,192.80
  6. Step 6: Final answer
    x = 11,684,955.60

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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.