Home / 12,128,054.15-18,192,081.23-11,888,905.70

Finding the Fourth Proportional to 12,128,054.15, 18,192,081.23 and 11,888,905.70

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Solution

The fourth proportional to 12,128,054.15, 18,192,081.23 and 11,888,905.70 is: 17,833,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,054.15 : 18,192,081.23 = 11,888,905.70 : x
  2. Step 2: Convert to fraction form
    12,128,054.15/18,192,081.23 = 11,888,905.70/x
  3. Step 3: Cross multiply
    12,128,054.15x = 18,192,081.23 × 11,888,905.70
  4. Step 4: Simplify right side
    12,128,054.15x = 216,283,938,230,210
  5. Step 5: Solve for x
    x = 216,283,938,230,210/12,128,054.15
  6. Step 6: Final answer
    x = 17,833,358.55

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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.