Home / 21,056,807.78-31,494,030.15-12,400,273.59

Finding the Fourth Proportional to 21,056,807.78, 31,494,030.15 and 12,400,273.59

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Solution

The fourth proportional to 21,056,807.78, 31,494,030.15 and 12,400,273.59 is: 18,546,713.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056,807.78 : 31,494,030.15 = 12,400,273.59 : x
  2. Step 2: Convert to fraction form
    21,056,807.78/31,494,030.15 = 12,400,273.59/x
  3. Step 3: Cross multiply
    21,056,807.78x = 31,494,030.15 × 12,400,273.59
  4. Step 4: Simplify right side
    21,056,807.78x = 390,534,590,311,708.69
  5. Step 5: Solve for x
    x = 390,534,590,311,708.69/21,056,807.78
  6. Step 6: Final answer
    x = 18,546,713.94

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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.