Home / 12,139,933.20-18,209,899.80-12,069,074.40

Finding the Fourth Proportional to 12,139,933.20, 18,209,899.80 and 12,069,074.40

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Solution

The fourth proportional to 12,139,933.20, 18,209,899.80 and 12,069,074.40 is: 18,103,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139,933.20 : 18,209,899.80 = 12,069,074.40 : x
  2. Step 2: Convert to fraction form
    12,139,933.20/18,209,899.80 = 12,069,074.40/x
  3. Step 3: Cross multiply
    12,139,933.20x = 18,209,899.80 × 12,069,074.40
  4. Step 4: Simplify right side
    12,139,933.20x = 219,776,635,502,745.12
  5. Step 5: Solve for x
    x = 219,776,635,502,745.12/12,139,933.20
  6. Step 6: Final answer
    x = 18,103,611.60

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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.