Home / 28,082.16-42,123.12-11,438.48

Finding the Fourth Proportional to 28,082.16, 42,123.12 and 11,438.48

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Solution

The fourth proportional to 28,082.16, 42,123.12 and 11,438.48 is: 17,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.16 : 42,123.12 = 11,438.48 : x
  2. Step 2: Convert to fraction form
    28,082.16/42,123.12 = 11,438.48/x
  3. Step 3: Cross multiply
    28,082.16x = 42,123.12 × 11,438.48
  4. Step 4: Simplify right side
    28,082.16x = 481,824,465.66
  5. Step 5: Solve for x
    x = 481,824,465.66/28,082.16
  6. Step 6: Final answer
    x = 17,157.67

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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.