Home / 21,135.21-29,152.51-16,088.10

Finding the Fourth Proportional to 21,135.21, 29,152.51 and 16,088.10

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Solution

The fourth proportional to 21,135.21, 29,152.51 and 16,088.10 is: 22,190.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.21 : 29,152.51 = 16,088.10 : x
  2. Step 2: Convert to fraction form
    21,135.21/29,152.51 = 16,088.10/x
  3. Step 3: Cross multiply
    21,135.21x = 29,152.51 × 16,088.10
  4. Step 4: Simplify right side
    21,135.21x = 469,008,496.13
  5. Step 5: Solve for x
    x = 469,008,496.13/21,135.21
  6. Step 6: Final answer
    x = 22,190.86

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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.