Home / 13,505,547.12-18,639,429.93-7,702,998.72

Finding the Fourth Proportional to 13,505,547.12, 18,639,429.93 and 7,702,998.72

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Solution

The fourth proportional to 13,505,547.12, 18,639,429.93 and 7,702,998.72 is: 10,631,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505,547.12 : 18,639,429.93 = 7,702,998.72 : x
  2. Step 2: Convert to fraction form
    13,505,547.12/18,639,429.93 = 7,702,998.72/x
  3. Step 3: Cross multiply
    13,505,547.12x = 18,639,429.93 × 7,702,998.72
  4. Step 4: Simplify right side
    13,505,547.12x = 143,579,504,892,319.69
  5. Step 5: Solve for x
    x = 143,579,504,892,319.69/13,505,547.12
  6. Step 6: Final answer
    x = 10,631,150.56

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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.