Home / 12,139,747.80-18,209,621.70-11,579,875.80

Finding the Fourth Proportional to 12,139,747.80, 18,209,621.70 and 11,579,875.80

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Solution

The fourth proportional to 12,139,747.80, 18,209,621.70 and 11,579,875.80 is: 17,369,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139,747.80 : 18,209,621.70 = 11,579,875.80 : x
  2. Step 2: Convert to fraction form
    12,139,747.80/18,209,621.70 = 11,579,875.80/x
  3. Step 3: Cross multiply
    12,139,747.80x = 18,209,621.70 × 11,579,875.80
  4. Step 4: Simplify right side
    12,139,747.80x = 210,865,157,650,984.88
  5. Step 5: Solve for x
    x = 210,865,157,650,984.88/12,139,747.80
  6. Step 6: Final answer
    x = 17,369,813.70

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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.