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Finding the Fourth Proportional to 11,438.64, 17,130.02 and 7,050.06

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Solution

The fourth proportional to 11,438.64, 17,130.02 and 7,050.06 is: 10,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.64 : 17,130.02 = 7,050.06 : x
  2. Step 2: Convert to fraction form
    11,438.64/17,130.02 = 7,050.06/x
  3. Step 3: Cross multiply
    11,438.64x = 17,130.02 × 7,050.06
  4. Step 4: Simplify right side
    11,438.64x = 120,767,633.55
  5. Step 5: Solve for x
    x = 120,767,633.55/11,438.64
  6. Step 6: Final answer
    x = 10,557.87

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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.