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Finding the Fourth Proportional to 12,898.17, 17,795.16 and 7,231.95

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Solution

The fourth proportional to 12,898.17, 17,795.16 and 7,231.95 is: 9,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.17 : 17,795.16 = 7,231.95 : x
  2. Step 2: Convert to fraction form
    12,898.17/17,795.16 = 7,231.95/x
  3. Step 3: Cross multiply
    12,898.17x = 17,795.16 × 7,231.95
  4. Step 4: Simplify right side
    12,898.17x = 128,693,707.36
  5. Step 5: Solve for x
    x = 128,693,707.36/12,898.17
  6. Step 6: Final answer
    x = 9,977.67

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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.