Home / 12,985,208.40-19,477,812.60-12,489,196.80

Finding the Fourth Proportional to 12,985,208.40, 19,477,812.60 and 12,489,196.80

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Solution

The fourth proportional to 12,985,208.40, 19,477,812.60 and 12,489,196.80 is: 18,733,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,208.40 : 19,477,812.60 = 12,489,196.80 : x
  2. Step 2: Convert to fraction form
    12,985,208.40/19,477,812.60 = 12,489,196.80/x
  3. Step 3: Cross multiply
    12,985,208.40x = 19,477,812.60 × 12,489,196.80
  4. Step 4: Simplify right side
    12,985,208.40x = 243,262,234,794,919.72
  5. Step 5: Solve for x
    x = 243,262,234,794,919.72/12,985,208.40
  6. Step 6: Final answer
    x = 18,733,795.20

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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.