Home / 20,991,283.32-28,966,799.72-11,571,770.40

Finding the Fourth Proportional to 20,991,283.32, 28,966,799.72 and 11,571,770.40

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Solution

The fourth proportional to 20,991,283.32, 28,966,799.72 and 11,571,770.40 is: 15,968,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991,283.32 : 28,966,799.72 = 11,571,770.40 : x
  2. Step 2: Convert to fraction form
    20,991,283.32/28,966,799.72 = 11,571,770.40/x
  3. Step 3: Cross multiply
    20,991,283.32x = 28,966,799.72 × 11,571,770.40
  4. Step 4: Simplify right side
    20,991,283.32x = 335,197,155,582,624.31
  5. Step 5: Solve for x
    x = 335,197,155,582,624.31/20,991,283.32
  6. Step 6: Final answer
    x = 15,968,397.48

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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.