Home / 20,712,667.96-28,572,976.02-15,809,377.51

Finding the Fourth Proportional to 20,712,667.96, 28,572,976.02 and 15,809,377.51

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Solution

The fourth proportional to 20,712,667.96, 28,572,976.02 and 15,809,377.51 is: 21,808,922.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,667.96 : 28,572,976.02 = 15,809,377.51 : x
  2. Step 2: Convert to fraction form
    20,712,667.96/28,572,976.02 = 15,809,377.51/x
  3. Step 3: Cross multiply
    20,712,667.96x = 28,572,976.02 × 15,809,377.51
  4. Step 4: Simplify right side
    20,712,667.96x = 451,720,964,484,357.31
  5. Step 5: Solve for x
    x = 451,720,964,484,357.31/20,712,667.96
  6. Step 6: Final answer
    x = 21,808,922.22

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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.