Home / 18,139,279.70-25,032,205.98-9,990,517.70

Finding the Fourth Proportional to 18,139,279.70, 25,032,205.98 and 9,990,517.70

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Solution

The fourth proportional to 18,139,279.70, 25,032,205.98 and 9,990,517.70 is: 13,786,914.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,279.70 : 25,032,205.98 = 9,990,517.70 : x
  2. Step 2: Convert to fraction form
    18,139,279.70/25,032,205.98 = 9,990,517.70/x
  3. Step 3: Cross multiply
    18,139,279.70x = 25,032,205.98 × 9,990,517.70
  4. Step 4: Simplify right side
    18,139,279.70x = 250,084,696,788,074.81
  5. Step 5: Solve for x
    x = 250,084,696,788,074.81/18,139,279.70
  6. Step 6: Final answer
    x = 13,786,914.42

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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.