Home / 9,045.72-13,630.20-7,438.28

Finding the Fourth Proportional to 9,045.72, 13,630.20 and 7,438.28

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Solution

The fourth proportional to 9,045.72, 13,630.20 and 7,438.28 is: 11,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,045.72 : 13,630.20 = 7,438.28 : x
  2. Step 2: Convert to fraction form
    9,045.72/13,630.20 = 7,438.28/x
  3. Step 3: Cross multiply
    9,045.72x = 13,630.20 × 7,438.28
  4. Step 4: Simplify right side
    9,045.72x = 101,385,148.01
  5. Step 5: Solve for x
    x = 101,385,148.01/9,045.72
  6. Step 6: Final answer
    x = 11,208.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.