Home / 20,643,637.36-28,487,103.96-11,475,629.68

Finding the Fourth Proportional to 20,643,637.36, 28,487,103.96 and 11,475,629.68

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Solution

The fourth proportional to 20,643,637.36, 28,487,103.96 and 11,475,629.68 is: 15,835,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,637.36 : 28,487,103.96 = 11,475,629.68 : x
  2. Step 2: Convert to fraction form
    20,643,637.36/28,487,103.96 = 11,475,629.68/x
  3. Step 3: Cross multiply
    20,643,637.36x = 28,487,103.96 × 11,475,629.68
  4. Step 4: Simplify right side
    20,643,637.36x = 326,907,455,700,621.56
  5. Step 5: Solve for x
    x = 326,907,455,700,621.56/20,643,637.36
  6. Step 6: Final answer
    x = 15,835,748.81

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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.