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Finding the Fourth Proportional to 15,673.84, 21,622.36 and 9,046

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Solution

The fourth proportional to 15,673.84, 21,622.36 and 9,046 is: 12,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.84 : 21,622.36 = 9,046 : x
  2. Step 2: Convert to fraction form
    15,673.84/21,622.36 = 9,046/x
  3. Step 3: Cross multiply
    15,673.84x = 21,622.36 × 9,046
  4. Step 4: Simplify right side
    15,673.84x = 195,595,868.56
  5. Step 5: Solve for x
    x = 195,595,868.56/15,673.84
  6. Step 6: Final answer
    x = 12,479.13

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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.