Home / 13,780,055.75-20,656,188.56-8,666,140.41

Finding the Fourth Proportional to 13,780,055.75, 20,656,188.56 and 8,666,140.41

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Solution

The fourth proportional to 13,780,055.75, 20,656,188.56 and 8,666,140.41 is: 12,990,472.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780,055.75 : 20,656,188.56 = 8,666,140.41 : x
  2. Step 2: Convert to fraction form
    13,780,055.75/20,656,188.56 = 8,666,140.41/x
  3. Step 3: Cross multiply
    13,780,055.75x = 20,656,188.56 × 8,666,140.41
  4. Step 4: Simplify right side
    13,780,055.75x = 179,009,430,418,061.06
  5. Step 5: Solve for x
    x = 179,009,430,418,061.06/13,780,055.75
  6. Step 6: Final answer
    x = 12,990,472.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.