Home / 20,350,406.40-28,077,436.80-12,198,670.08

Finding the Fourth Proportional to 20,350,406.40, 28,077,436.80 and 12,198,670.08

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Solution

The fourth proportional to 20,350,406.40, 28,077,436.80 and 12,198,670.08 is: 16,830,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350,406.40 : 28,077,436.80 = 12,198,670.08 : x
  2. Step 2: Convert to fraction form
    20,350,406.40/28,077,436.80 = 12,198,670.08/x
  3. Step 3: Cross multiply
    20,350,406.40x = 28,077,436.80 × 12,198,670.08
  4. Step 4: Simplify right side
    20,350,406.40x = 342,507,388,215,250.94
  5. Step 5: Solve for x
    x = 342,507,388,215,250.94/20,350,406.40
  6. Step 6: Final answer
    x = 16,830,493.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.