Home / 12,478,416.80-18,717,625.20-8,447,338.40

Finding the Fourth Proportional to 12,478,416.80, 18,717,625.20 and 8,447,338.40

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Solution

The fourth proportional to 12,478,416.80, 18,717,625.20 and 8,447,338.40 is: 12,671,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,416.80 : 18,717,625.20 = 8,447,338.40 : x
  2. Step 2: Convert to fraction form
    12,478,416.80/18,717,625.20 = 8,447,338.40/x
  3. Step 3: Cross multiply
    12,478,416.80x = 18,717,625.20 × 8,447,338.40
  4. Step 4: Simplify right side
    12,478,416.80x = 158,114,114,108,767.69
  5. Step 5: Solve for x
    x = 158,114,114,108,767.69/12,478,416.80
  6. Step 6: Final answer
    x = 12,671,007.60

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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.