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Finding the Fourth Proportional to 21,504.95, 29,676.74 and 12,073.51

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Solution

The fourth proportional to 21,504.95, 29,676.74 and 12,073.51 is: 16,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,504.95 : 29,676.74 = 12,073.51 : x
  2. Step 2: Convert to fraction form
    21,504.95/29,676.74 = 12,073.51/x
  3. Step 3: Cross multiply
    21,504.95x = 29,676.74 × 12,073.51
  4. Step 4: Simplify right side
    21,504.95x = 358,302,417.16
  5. Step 5: Solve for x
    x = 358,302,417.16/21,504.95
  6. Step 6: Final answer
    x = 16,661.39

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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.