Home / 13,605,355.81-20,360,100.60-8,490,192.45

Finding the Fourth Proportional to 13,605,355.81, 20,360,100.60 and 8,490,192.45

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Solution

The fourth proportional to 13,605,355.81, 20,360,100.60 and 8,490,192.45 is: 12,705,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605,355.81 : 20,360,100.60 = 8,490,192.45 : x
  2. Step 2: Convert to fraction form
    13,605,355.81/20,360,100.60 = 8,490,192.45/x
  3. Step 3: Cross multiply
    13,605,355.81x = 20,360,100.60 × 8,490,192.45
  4. Step 4: Simplify right side
    13,605,355.81x = 172,861,172,319,010.09
  5. Step 5: Solve for x
    x = 172,861,172,319,010.09/13,605,355.81
  6. Step 6: Final answer
    x = 12,705,376.82

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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.