Home / 12,990,048.57-17,926,829.69-7,188,832.22

Finding the Fourth Proportional to 12,990,048.57, 17,926,829.69 and 7,188,832.22

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Solution

The fourth proportional to 12,990,048.57, 17,926,829.69 and 7,188,832.22 is: 9,920,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990,048.57 : 17,926,829.69 = 7,188,832.22 : x
  2. Step 2: Convert to fraction form
    12,990,048.57/17,926,829.69 = 7,188,832.22/x
  3. Step 3: Cross multiply
    12,990,048.57x = 17,926,829.69 × 7,188,832.22
  4. Step 4: Simplify right side
    12,990,048.57x = 128,872,970,752,346.30
  5. Step 5: Solve for x
    x = 128,872,970,752,346.30/12,990,048.57
  6. Step 6: Final answer
    x = 9,920,899.84

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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.