Home / 28,731,222.57-39,649,924.47-15,679,322.18

Finding the Fourth Proportional to 28,731,222.57, 39,649,924.47 and 15,679,322.18

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Solution

The fourth proportional to 28,731,222.57, 39,649,924.47 and 15,679,322.18 is: 21,637,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,222.57 : 39,649,924.47 = 15,679,322.18 : x
  2. Step 2: Convert to fraction form
    28,731,222.57/39,649,924.47 = 15,679,322.18/x
  3. Step 3: Cross multiply
    28,731,222.57x = 39,649,924.47 × 15,679,322.18
  4. Step 4: Simplify right side
    28,731,222.57x = 621,683,940,187,030.88
  5. Step 5: Solve for x
    x = 621,683,940,187,030.88/28,731,222.57
  6. Step 6: Final answer
    x = 21,637,921.56

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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.