Home / 20,915,848.50-28,864,571.79-11,623,810.12

Finding the Fourth Proportional to 20,915,848.50, 28,864,571.79 and 11,623,810.12

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Solution

The fourth proportional to 20,915,848.50, 28,864,571.79 and 11,623,810.12 is: 16,041,247.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,848.50 : 28,864,571.79 = 11,623,810.12 : x
  2. Step 2: Convert to fraction form
    20,915,848.50/28,864,571.79 = 11,623,810.12/x
  3. Step 3: Cross multiply
    20,915,848.50x = 28,864,571.79 × 11,623,810.12
  4. Step 4: Simplify right side
    20,915,848.50x = 335,516,301,682,068.50
  5. Step 5: Solve for x
    x = 335,516,301,682,068.50/20,915,848.50
  6. Step 6: Final answer
    x = 16,041,247.46

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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.