Home / 12,478,279.80-18,717,419.70-7,084,846.20

Finding the Fourth Proportional to 12,478,279.80, 18,717,419.70 and 7,084,846.20

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Solution

The fourth proportional to 12,478,279.80, 18,717,419.70 and 7,084,846.20 is: 10,627,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,279.80 : 18,717,419.70 = 7,084,846.20 : x
  2. Step 2: Convert to fraction form
    12,478,279.80/18,717,419.70 = 7,084,846.20/x
  3. Step 3: Cross multiply
    12,478,279.80x = 18,717,419.70 × 7,084,846.20
  4. Step 4: Simplify right side
    12,478,279.80x = 132,610,039,835,350.14
  5. Step 5: Solve for x
    x = 132,610,039,835,350.14/12,478,279.80
  6. Step 6: Final answer
    x = 10,627,269.30

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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.