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Finding the Fourth Proportional to 18,697.42, 28,038.84 and 7,004.26

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Solution

The fourth proportional to 18,697.42, 28,038.84 and 7,004.26 is: 10,503.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.42 : 28,038.84 = 7,004.26 : x
  2. Step 2: Convert to fraction form
    18,697.42/28,038.84 = 7,004.26/x
  3. Step 3: Cross multiply
    18,697.42x = 28,038.84 × 7,004.26
  4. Step 4: Simplify right side
    18,697.42x = 196,391,325.46
  5. Step 5: Solve for x
    x = 196,391,325.46/18,697.42
  6. Step 6: Final answer
    x = 10,503.66

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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.