Home / 18,811,580.40-28,243,614.60-12,030,130.80

Finding the Fourth Proportional to 18,811,580.40, 28,243,614.60 and 12,030,130.80

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Solution

The fourth proportional to 18,811,580.40, 28,243,614.60 and 12,030,130.80 is: 18,061,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811,580.40 : 28,243,614.60 = 12,030,130.80 : x
  2. Step 2: Convert to fraction form
    18,811,580.40/28,243,614.60 = 12,030,130.80/x
  3. Step 3: Cross multiply
    18,811,580.40x = 28,243,614.60 × 12,030,130.80
  4. Step 4: Simplify right side
    18,811,580.40x = 339,774,377,902,789.75
  5. Step 5: Solve for x
    x = 339,774,377,902,789.75/18,811,580.40
  6. Step 6: Final answer
    x = 18,061,979.41

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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.