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Finding the Fourth Proportional to 18,685,280.55, 28,027,920.83 and 18,685,280.55

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Solution

The fourth proportional to 18,685,280.55, 28,027,920.83 and 18,685,280.55 is: 28,027,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,280.55 : 28,027,920.83 = 18,685,280.55 : x
  2. Step 2: Convert to fraction form
    18,685,280.55/28,027,920.83 = 18,685,280.55/x
  3. Step 3: Cross multiply
    18,685,280.55x = 28,027,920.83 × 18,685,280.55
  4. Step 4: Simplify right side
    18,685,280.55x = 523,709,563,848,312.44
  5. Step 5: Solve for x
    x = 523,709,563,848,312.44/18,685,280.55
  6. Step 6: Final answer
    x = 28,027,920.83

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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.