Home / 21,808,891.35-30,101,398.62-13,555,187.01

Finding the Fourth Proportional to 21,808,891.35, 30,101,398.62 and 13,555,187.01

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Solution

The fourth proportional to 21,808,891.35, 30,101,398.62 and 13,555,187.01 is: 18,709,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808,891.35 : 30,101,398.62 = 13,555,187.01 : x
  2. Step 2: Convert to fraction form
    21,808,891.35/30,101,398.62 = 13,555,187.01/x
  3. Step 3: Cross multiply
    21,808,891.35x = 30,101,398.62 × 13,555,187.01
  4. Step 4: Simplify right side
    21,808,891.35x = 408,030,087,556,655.94
  5. Step 5: Solve for x
    x = 408,030,087,556,655.94/21,808,891.35
  6. Step 6: Final answer
    x = 18,709,345.70

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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.