Home / 21,076.20-29,088.05-12,123.47

Finding the Fourth Proportional to 21,076.20, 29,088.05 and 12,123.47

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Solution

The fourth proportional to 21,076.20, 29,088.05 and 12,123.47 is: 16,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.20 : 29,088.05 = 12,123.47 : x
  2. Step 2: Convert to fraction form
    21,076.20/29,088.05 = 12,123.47/x
  3. Step 3: Cross multiply
    21,076.20x = 29,088.05 × 12,123.47
  4. Step 4: Simplify right side
    21,076.20x = 352,648,113.64
  5. Step 5: Solve for x
    x = 352,648,113.64/21,076.20
  6. Step 6: Final answer
    x = 16,732.05

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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.