Home / 18,901,931.40-28,334,234.70-9,309,457.80

Finding the Fourth Proportional to 18,901,931.40, 28,334,234.70 and 9,309,457.80

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Solution

The fourth proportional to 18,901,931.40, 28,334,234.70 and 9,309,457.80 is: 13,954,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,931.40 : 28,334,234.70 = 9,309,457.80 : x
  2. Step 2: Convert to fraction form
    18,901,931.40/28,334,234.70 = 9,309,457.80/x
  3. Step 3: Cross multiply
    18,901,931.40x = 28,334,234.70 × 9,309,457.80
  4. Step 4: Simplify right side
    18,901,931.40x = 263,776,362,234,945.69
  5. Step 5: Solve for x
    x = 263,776,362,234,945.69/18,901,931.40
  6. Step 6: Final answer
    x = 13,954,995.21

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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.