Home / 21,461.78-29,618.52-12,031.76

Finding the Fourth Proportional to 21,461.78, 29,618.52 and 12,031.76

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Solution

The fourth proportional to 21,461.78, 29,618.52 and 12,031.76 is: 16,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.78 : 29,618.52 = 12,031.76 : x
  2. Step 2: Convert to fraction form
    21,461.78/29,618.52 = 12,031.76/x
  3. Step 3: Cross multiply
    21,461.78x = 29,618.52 × 12,031.76
  4. Step 4: Simplify right side
    21,461.78x = 356,362,924.20
  5. Step 5: Solve for x
    x = 356,362,924.20/21,461.78
  6. Step 6: Final answer
    x = 16,604.54

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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.