Home / 13,440,745.20-20,161,117.80-7,772,041.20

Finding the Fourth Proportional to 13,440,745.20, 20,161,117.80 and 7,772,041.20

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Solution

The fourth proportional to 13,440,745.20, 20,161,117.80 and 7,772,041.20 is: 11,658,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440,745.20 : 20,161,117.80 = 7,772,041.20 : x
  2. Step 2: Convert to fraction form
    13,440,745.20/20,161,117.80 = 7,772,041.20/x
  3. Step 3: Cross multiply
    13,440,745.20x = 20,161,117.80 × 7,772,041.20
  4. Step 4: Simplify right side
    13,440,745.20x = 156,693,038,179,653.38
  5. Step 5: Solve for x
    x = 156,693,038,179,653.38/13,440,745.20
  6. Step 6: Final answer
    x = 11,658,061.80

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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.