Home / 28,731,018.34-39,648,478.69-15,678,499.33

Finding the Fourth Proportional to 28,731,018.34, 39,648,478.69 and 15,678,499.33

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Solution

The fourth proportional to 28,731,018.34, 39,648,478.69 and 15,678,499.33 is: 21,636,150.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,018.34 : 39,648,478.69 = 15,678,499.33 : x
  2. Step 2: Convert to fraction form
    28,731,018.34/39,648,478.69 = 15,678,499.33/x
  3. Step 3: Cross multiply
    28,731,018.34x = 39,648,478.69 × 15,678,499.33
  4. Step 4: Simplify right side
    28,731,018.34x = 621,628,646,645,843
  5. Step 5: Solve for x
    x = 621,628,646,645,843/28,731,018.34
  6. Step 6: Final answer
    x = 21,636,150.84

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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.