Home / 28,167,838.35-38,871,845.19-15,609,102.78

Finding the Fourth Proportional to 28,167,838.35, 38,871,845.19 and 15,609,102.78

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Solution

The fourth proportional to 28,167,838.35, 38,871,845.19 and 15,609,102.78 is: 21,540,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167,838.35 : 38,871,845.19 = 15,609,102.78 : x
  2. Step 2: Convert to fraction form
    28,167,838.35/38,871,845.19 = 15,609,102.78/x
  3. Step 3: Cross multiply
    28,167,838.35x = 38,871,845.19 × 15,609,102.78
  4. Step 4: Simplify right side
    28,167,838.35x = 606,754,626,818,958.62
  5. Step 5: Solve for x
    x = 606,754,626,818,958.62/28,167,838.35
  6. Step 6: Final answer
    x = 21,540,688.33

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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.