Home / 28,440.64-42,660.96-7,666.24

Finding the Fourth Proportional to 28,440.64, 42,660.96 and 7,666.24

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Solution

The fourth proportional to 28,440.64, 42,660.96 and 7,666.24 is: 11,499.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.64 : 42,660.96 = 7,666.24 : x
  2. Step 2: Convert to fraction form
    28,440.64/42,660.96 = 7,666.24/x
  3. Step 3: Cross multiply
    28,440.64x = 42,660.96 × 7,666.24
  4. Step 4: Simplify right side
    28,440.64x = 327,049,157.99
  5. Step 5: Solve for x
    x = 327,049,157.99/28,440.64
  6. Step 6: Final answer
    x = 11,499.36

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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.