Home / 20,421,526.97-28,181,707.70-11,254,169.72

Finding the Fourth Proportional to 20,421,526.97, 28,181,707.70 and 11,254,169.72

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Solution

The fourth proportional to 20,421,526.97, 28,181,707.70 and 11,254,169.72 is: 15,530,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,526.97 : 28,181,707.70 = 11,254,169.72 : x
  2. Step 2: Convert to fraction form
    20,421,526.97/28,181,707.70 = 11,254,169.72/x
  3. Step 3: Cross multiply
    20,421,526.97x = 28,181,707.70 × 11,254,169.72
  4. Step 4: Simplify right side
    20,421,526.97x = 317,161,721,258,051.44
  5. Step 5: Solve for x
    x = 317,161,721,258,051.44/20,421,526.97
  6. Step 6: Final answer
    x = 15,530,754.47

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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.