Home / 18,887,081,501.10-28,330,622,251.65-7,839,911,145.90

Finding the Fourth Proportional to 18,887,081,501.10, 28,330,622,251.65 and 7,839,911,145.90

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Solution

The fourth proportional to 18,887,081,501.10, 28,330,622,251.65 and 7,839,911,145.90 is: 11,759,866,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,081,501.10 : 28,330,622,251.65 = 7,839,911,145.90 : x
  2. Step 2: Convert to fraction form
    18,887,081,501.10/28,330,622,251.65 = 7,839,911,145.90/x
  3. Step 3: Cross multiply
    18,887,081,501.10x = 28,330,622,251.65 × 7,839,911,145.90
  4. Step 4: Simplify right side
    18,887,081,501.10x = 222,109,561,160,993,406,976
  5. Step 5: Solve for x
    x = 222,109,561,160,993,406,976/18,887,081,501.10
  6. Step 6: Final answer
    x = 11,759,866,718.85

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1.5x scale

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.