Home / 28,731,042.09-39,649,681.44-15,679,143.41

Finding the Fourth Proportional to 28,731,042.09, 39,649,681.44 and 15,679,143.41

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Solution

The fourth proportional to 28,731,042.09, 39,649,681.44 and 15,679,143.41 is: 21,637,678.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,042.09 : 39,649,681.44 = 15,679,143.41 : x
  2. Step 2: Convert to fraction form
    28,731,042.09/39,649,681.44 = 15,679,143.41/x
  3. Step 3: Cross multiply
    28,731,042.09x = 39,649,681.44 × 15,679,143.41
  4. Step 4: Simplify right side
    28,731,042.09x = 621,673,041,260,326.88
  5. Step 5: Solve for x
    x = 621,673,041,260,326.88/28,731,042.09
  6. Step 6: Final answer
    x = 21,637,678.14

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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.