Home / 18,386,189.26-25,371,063.51-11,320,660.51

Finding the Fourth Proportional to 18,386,189.26, 25,371,063.51 and 11,320,660.51

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Solution

The fourth proportional to 18,386,189.26, 25,371,063.51 and 11,320,660.51 is: 15,621,355.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386,189.26 : 25,371,063.51 = 11,320,660.51 : x
  2. Step 2: Convert to fraction form
    18,386,189.26/25,371,063.51 = 11,320,660.51/x
  3. Step 3: Cross multiply
    18,386,189.26x = 25,371,063.51 × 11,320,660.51
  4. Step 4: Simplify right side
    18,386,189.26x = 287,217,196,774,359
  5. Step 5: Solve for x
    x = 287,217,196,774,359/18,386,189.26
  6. Step 6: Final answer
    x = 15,621,355.39

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Double scale
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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.