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Finding the Fourth Proportional to 13,045.44, 18,000.48 and 7,456.32

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Solution

The fourth proportional to 13,045.44, 18,000.48 and 7,456.32 is: 10,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.44 : 18,000.48 = 7,456.32 : x
  2. Step 2: Convert to fraction form
    13,045.44/18,000.48 = 7,456.32/x
  3. Step 3: Cross multiply
    13,045.44x = 18,000.48 × 7,456.32
  4. Step 4: Simplify right side
    13,045.44x = 134,217,339.03
  5. Step 5: Solve for x
    x = 134,217,339.03/13,045.44
  6. Step 6: Final answer
    x = 10,288.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.