Home / 28,142.96-42,203.48-10,603.20

Finding the Fourth Proportional to 28,142.96, 42,203.48 and 10,603.20

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Solution

The fourth proportional to 28,142.96, 42,203.48 and 10,603.20 is: 15,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.96 : 42,203.48 = 10,603.20 : x
  2. Step 2: Convert to fraction form
    28,142.96/42,203.48 = 10,603.20/x
  3. Step 3: Cross multiply
    28,142.96x = 42,203.48 × 10,603.20
  4. Step 4: Simplify right side
    28,142.96x = 447,491,939.14
  5. Step 5: Solve for x
    x = 447,491,939.14/28,142.96
  6. Step 6: Final answer
    x = 15,900.67

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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.