Home / 28,415,998.80-42,623,998.20-12,459,646.80

Finding the Fourth Proportional to 28,415,998.80, 42,623,998.20 and 12,459,646.80

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Solution

The fourth proportional to 28,415,998.80, 42,623,998.20 and 12,459,646.80 is: 18,689,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415,998.80 : 42,623,998.20 = 12,459,646.80 : x
  2. Step 2: Convert to fraction form
    28,415,998.80/42,623,998.20 = 12,459,646.80/x
  3. Step 3: Cross multiply
    28,415,998.80x = 42,623,998.20 × 12,459,646.80
  4. Step 4: Simplify right side
    28,415,998.80x = 531,079,962,775,835.81
  5. Step 5: Solve for x
    x = 531,079,962,775,835.81/28,415,998.80
  6. Step 6: Final answer
    x = 18,689,470.20

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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.