Home / 20,271.84-27,953.06-13,185.12

Finding the Fourth Proportional to 20,271.84, 27,953.06 and 13,185.12

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Solution

The fourth proportional to 20,271.84, 27,953.06 and 13,185.12 is: 18,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.84 : 27,953.06 = 13,185.12 : x
  2. Step 2: Convert to fraction form
    20,271.84/27,953.06 = 13,185.12/x
  3. Step 3: Cross multiply
    20,271.84x = 27,953.06 × 13,185.12
  4. Step 4: Simplify right side
    20,271.84x = 368,564,450.47
  5. Step 5: Solve for x
    x = 368,564,450.47/20,271.84
  6. Step 6: Final answer
    x = 18,181.10

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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.