Home / 18,689,138.40-28,038,956.40-9,104,829.60

Finding the Fourth Proportional to 18,689,138.40, 28,038,956.40 and 9,104,829.60

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Solution

The fourth proportional to 18,689,138.40, 28,038,956.40 and 9,104,829.60 is: 13,659,801.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,138.40 : 28,038,956.40 = 9,104,829.60 : x
  2. Step 2: Convert to fraction form
    18,689,138.40/28,038,956.40 = 9,104,829.60/x
  3. Step 3: Cross multiply
    18,689,138.40x = 28,038,956.40 × 9,104,829.60
  4. Step 4: Simplify right side
    18,689,138.40x = 255,289,920,183,829.41
  5. Step 5: Solve for x
    x = 255,289,920,183,829.41/18,689,138.40
  6. Step 6: Final answer
    x = 13,659,801.47

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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.