Home / 12,116,318.40-18,152,359.20-7,382,980.80

Finding the Fourth Proportional to 12,116,318.40, 18,152,359.20 and 7,382,980.80

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Solution

The fourth proportional to 12,116,318.40, 18,152,359.20 and 7,382,980.80 is: 11,060,993.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116,318.40 : 18,152,359.20 = 7,382,980.80 : x
  2. Step 2: Convert to fraction form
    12,116,318.40/18,152,359.20 = 7,382,980.80/x
  3. Step 3: Cross multiply
    12,116,318.40x = 18,152,359.20 × 7,382,980.80
  4. Step 4: Simplify right side
    12,116,318.40x = 134,018,519,448,303.34
  5. Step 5: Solve for x
    x = 134,018,519,448,303.34/12,116,318.40
  6. Step 6: Final answer
    x = 11,060,993.53

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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.