Home / 18,857.40-28,271.70-11,460.28

Finding the Fourth Proportional to 18,857.40, 28,271.70 and 11,460.28

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Solution

The fourth proportional to 18,857.40, 28,271.70 and 11,460.28 is: 17,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.40 : 28,271.70 = 11,460.28 : x
  2. Step 2: Convert to fraction form
    18,857.40/28,271.70 = 11,460.28/x
  3. Step 3: Cross multiply
    18,857.40x = 28,271.70 × 11,460.28
  4. Step 4: Simplify right side
    18,857.40x = 324,001,598.08
  5. Step 5: Solve for x
    x = 324,001,598.08/18,857.40
  6. Step 6: Final answer
    x = 17,181.67

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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.