Home / 20,872.51-31,254.39-17,533.08

Finding the Fourth Proportional to 20,872.51, 31,254.39 and 17,533.08

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Solution

The fourth proportional to 20,872.51, 31,254.39 and 17,533.08 is: 26,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.51 : 31,254.39 = 17,533.08 : x
  2. Step 2: Convert to fraction form
    20,872.51/31,254.39 = 17,533.08/x
  3. Step 3: Cross multiply
    20,872.51x = 31,254.39 × 17,533.08
  4. Step 4: Simplify right side
    20,872.51x = 547,985,720.22
  5. Step 5: Solve for x
    x = 547,985,720.22/20,872.51
  6. Step 6: Final answer
    x = 26,253.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.