Home / 12,478,292.80-18,717,439.20-7,084,859.20

Finding the Fourth Proportional to 12,478,292.80, 18,717,439.20 and 7,084,859.20

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Solution

The fourth proportional to 12,478,292.80, 18,717,439.20 and 7,084,859.20 is: 10,627,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,292.80 : 18,717,439.20 = 7,084,859.20 : x
  2. Step 2: Convert to fraction form
    12,478,292.80/18,717,439.20 = 7,084,859.20/x
  3. Step 3: Cross multiply
    12,478,292.80x = 18,717,439.20 × 7,084,859.20
  4. Step 4: Simplify right side
    12,478,292.80x = 132,610,421,316,560.64
  5. Step 5: Solve for x
    x = 132,610,421,316,560.64/12,478,292.80
  6. Step 6: Final answer
    x = 10,627,288.80

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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.