Home / 12,738,056.80-19,107,085.20-9,900,205.60

Finding the Fourth Proportional to 12,738,056.80, 19,107,085.20 and 9,900,205.60

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Solution

The fourth proportional to 12,738,056.80, 19,107,085.20 and 9,900,205.60 is: 14,850,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738,056.80 : 19,107,085.20 = 9,900,205.60 : x
  2. Step 2: Convert to fraction form
    12,738,056.80/19,107,085.20 = 9,900,205.60/x
  3. Step 3: Cross multiply
    12,738,056.80x = 19,107,085.20 × 9,900,205.60
  4. Step 4: Simplify right side
    12,738,056.80x = 189,164,071,896,717.09
  5. Step 5: Solve for x
    x = 189,164,071,896,717.09/12,738,056.80
  6. Step 6: Final answer
    x = 14,850,308.40

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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.