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Finding the Fourth Proportional to 12,898.76, 17,804.34 and 7,313.48

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Solution

The fourth proportional to 12,898.76, 17,804.34 and 7,313.48 is: 10,094.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.76 : 17,804.34 = 7,313.48 : x
  2. Step 2: Convert to fraction form
    12,898.76/17,804.34 = 7,313.48/x
  3. Step 3: Cross multiply
    12,898.76x = 17,804.34 × 7,313.48
  4. Step 4: Simplify right side
    12,898.76x = 130,211,684.50
  5. Step 5: Solve for x
    x = 130,211,684.50/12,898.76
  6. Step 6: Final answer
    x = 10,094.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.