Home / 8,280,012.40-12,420,018.60-6,957,314.80

Finding the Fourth Proportional to 8,280,012.40, 12,420,018.60 and 6,957,314.80

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Solution

The fourth proportional to 8,280,012.40, 12,420,018.60 and 6,957,314.80 is: 10,435,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280,012.40 : 12,420,018.60 = 6,957,314.80 : x
  2. Step 2: Convert to fraction form
    8,280,012.40/12,420,018.60 = 6,957,314.80/x
  3. Step 3: Cross multiply
    8,280,012.40x = 12,420,018.60 × 6,957,314.80
  4. Step 4: Simplify right side
    8,280,012.40x = 86,409,979,222,055.28
  5. Step 5: Solve for x
    x = 86,409,979,222,055.28/8,280,012.40
  6. Step 6: Final answer
    x = 10,435,972.20

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Similar ratio
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1.5x scale

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.