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Finding the Fourth Proportional to 18,337,374.55, 27,506,975.49 and 6,978,703.51

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Solution

The fourth proportional to 18,337,374.55, 27,506,975.49 and 6,978,703.51 is: 10,468,402.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337,374.55 : 27,506,975.49 = 6,978,703.51 : x
  2. Step 2: Convert to fraction form
    18,337,374.55/27,506,975.49 = 6,978,703.51/x
  3. Step 3: Cross multiply
    18,337,374.55x = 27,506,975.49 × 6,978,703.51
  4. Step 4: Simplify right side
    18,337,374.55x = 191,963,026,401,546.94
  5. Step 5: Solve for x
    x = 191,963,026,401,546.94/18,337,374.55
  6. Step 6: Final answer
    x = 10,468,402.98

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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.