Home / 20,412,666.89-28,169,478.81-11,245,309.64

Finding the Fourth Proportional to 20,412,666.89, 28,169,478.81 and 11,245,309.64

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Solution

The fourth proportional to 20,412,666.89, 28,169,478.81 and 11,245,309.64 is: 15,518,526.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,666.89 : 28,169,478.81 = 11,245,309.64 : x
  2. Step 2: Convert to fraction form
    20,412,666.89/28,169,478.81 = 11,245,309.64/x
  3. Step 3: Cross multiply
    20,412,666.89x = 28,169,478.81 × 11,245,309.64
  4. Step 4: Simplify right side
    20,412,666.89x = 316,774,511,615,868.75
  5. Step 5: Solve for x
    x = 316,774,511,615,868.75/20,412,666.89
  6. Step 6: Final answer
    x = 15,518,526.48

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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.