Home / 21,031.18-29,037.60-13,076.98

Finding the Fourth Proportional to 21,031.18, 29,037.60 and 13,076.98

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Solution

The fourth proportional to 21,031.18, 29,037.60 and 13,076.98 is: 18,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.18 : 29,037.60 = 13,076.98 : x
  2. Step 2: Convert to fraction form
    21,031.18/29,037.60 = 13,076.98/x
  3. Step 3: Cross multiply
    21,031.18x = 29,037.60 × 13,076.98
  4. Step 4: Simplify right side
    21,031.18x = 379,724,114.45
  5. Step 5: Solve for x
    x = 379,724,114.45/21,031.18
  6. Step 6: Final answer
    x = 18,055.29

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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.