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Finding the Fourth Proportional to 12,950.81, 17,871.59 and 7,285.67

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Solution

The fourth proportional to 12,950.81, 17,871.59 and 7,285.67 is: 10,053.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.81 : 17,871.59 = 7,285.67 : x
  2. Step 2: Convert to fraction form
    12,950.81/17,871.59 = 7,285.67/x
  3. Step 3: Cross multiply
    12,950.81x = 17,871.59 × 7,285.67
  4. Step 4: Simplify right side
    12,950.81x = 130,206,417.76
  5. Step 5: Solve for x
    x = 130,206,417.76/12,950.81
  6. Step 6: Final answer
    x = 10,053.92

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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.