Home / 12,989,530.80-19,483,894.60-6,171,012.40

Finding the Fourth Proportional to 12,989,530.80, 19,483,894.60 and 6,171,012.40

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Solution

The fourth proportional to 12,989,530.80, 19,483,894.60 and 6,171,012.40 is: 9,256,327.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,530.80 : 19,483,894.60 = 6,171,012.40 : x
  2. Step 2: Convert to fraction form
    12,989,530.80/19,483,894.60 = 6,171,012.40/x
  3. Step 3: Cross multiply
    12,989,530.80x = 19,483,894.60 × 6,171,012.40
  4. Step 4: Simplify right side
    12,989,530.80x = 120,235,355,176,893.06
  5. Step 5: Solve for x
    x = 120,235,355,176,893.06/12,989,530.80
  6. Step 6: Final answer
    x = 9,256,327.81

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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.