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Finding the Fourth Proportional to 12,988.19, 17,926.04 and 7,324.67

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Solution

The fourth proportional to 12,988.19, 17,926.04 and 7,324.67 is: 10,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.19 : 17,926.04 = 7,324.67 : x
  2. Step 2: Convert to fraction form
    12,988.19/17,926.04 = 7,324.67/x
  3. Step 3: Cross multiply
    12,988.19x = 17,926.04 × 7,324.67
  4. Step 4: Simplify right side
    12,988.19x = 131,302,327.41
  5. Step 5: Solve for x
    x = 131,302,327.41/12,988.19
  6. Step 6: Final answer
    x = 10,109.36

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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.