Home / 13,189,021.40-18,201,429.68-7,308,639.02

Finding the Fourth Proportional to 13,189,021.40, 18,201,429.68 and 7,308,639.02

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Solution

The fourth proportional to 13,189,021.40, 18,201,429.68 and 7,308,639.02 is: 10,086,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189,021.40 : 18,201,429.68 = 7,308,639.02 : x
  2. Step 2: Convert to fraction form
    13,189,021.40/18,201,429.68 = 7,308,639.02/x
  3. Step 3: Cross multiply
    13,189,021.40x = 18,201,429.68 × 7,308,639.02
  4. Step 4: Simplify right side
    13,189,021.40x = 133,027,679,187,994.50
  5. Step 5: Solve for x
    x = 133,027,679,187,994.50/13,189,021.40
  6. Step 6: Final answer
    x = 10,086,243.33

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1.5x scale

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.