Home / 28,011,419.86-38,687,645.85-18,828,119.38

Finding the Fourth Proportional to 28,011,419.86, 38,687,645.85 and 18,828,119.38

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Solution

The fourth proportional to 28,011,419.86, 38,687,645.85 and 18,828,119.38 is: 26,004,237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,419.86 : 38,687,645.85 = 18,828,119.38 : x
  2. Step 2: Convert to fraction form
    28,011,419.86/38,687,645.85 = 18,828,119.38/x
  3. Step 3: Cross multiply
    28,011,419.86x = 38,687,645.85 × 18,828,119.38
  4. Step 4: Simplify right side
    28,011,419.86x = 728,415,614,594,961.50
  5. Step 5: Solve for x
    x = 728,415,614,594,961.50/28,011,419.86
  6. Step 6: Final answer
    x = 26,004,237.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.