Home / 20,724,778.20-31,086,875.70-9,365,208.60

Finding the Fourth Proportional to 20,724,778.20, 31,086,875.70 and 9,365,208.60

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Solution

The fourth proportional to 20,724,778.20, 31,086,875.70 and 9,365,208.60 is: 14,047,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724,778.20 : 31,086,875.70 = 9,365,208.60 : x
  2. Step 2: Convert to fraction form
    20,724,778.20/31,086,875.70 = 9,365,208.60/x
  3. Step 3: Cross multiply
    20,724,778.20x = 31,086,875.70 × 9,365,208.60
  4. Step 4: Simplify right side
    20,724,778.20x = 291,135,075,652,771
  5. Step 5: Solve for x
    x = 291,135,075,652,771/20,724,778.20
  6. Step 6: Final answer
    x = 14,047,681.13

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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.