Home / 20,863,849.47-28,791,683.31-11,569,919.76

Finding the Fourth Proportional to 20,863,849.47, 28,791,683.31 and 11,569,919.76

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Solution

The fourth proportional to 20,863,849.47, 28,791,683.31 and 11,569,919.76 is: 15,966,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863,849.47 : 28,791,683.31 = 11,569,919.76 : x
  2. Step 2: Convert to fraction form
    20,863,849.47/28,791,683.31 = 11,569,919.76/x
  3. Step 3: Cross multiply
    20,863,849.47x = 28,791,683.31 × 11,569,919.76
  4. Step 4: Simplify right side
    20,863,849.47x = 333,117,465,652,031.19
  5. Step 5: Solve for x
    x = 333,117,465,652,031.19/20,863,849.47
  6. Step 6: Final answer
    x = 15,966,251.39

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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.