Home / 13,291,641.70-18,345,878.10-8,656,975.60

Finding the Fourth Proportional to 13,291,641.70, 18,345,878.10 and 8,656,975.60

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Solution

The fourth proportional to 13,291,641.70, 18,345,878.10 and 8,656,975.60 is: 11,948,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,641.70 : 18,345,878.10 = 8,656,975.60 : x
  2. Step 2: Convert to fraction form
    13,291,641.70/18,345,878.10 = 8,656,975.60/x
  3. Step 3: Cross multiply
    13,291,641.70x = 18,345,878.10 × 8,656,975.60
  4. Step 4: Simplify right side
    13,291,641.70x = 158,819,819,028,989.47
  5. Step 5: Solve for x
    x = 158,819,819,028,989.47/13,291,641.70
  6. Step 6: Final answer
    x = 11,948,848.95

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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.