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Finding the Fourth Proportional to 18,538.40, 26,005.60 and 18,538.40

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Solution

The fourth proportional to 18,538.40, 26,005.60 and 18,538.40 is: 26,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.40 : 26,005.60 = 18,538.40 : x
  2. Step 2: Convert to fraction form
    18,538.40/26,005.60 = 18,538.40/x
  3. Step 3: Cross multiply
    18,538.40x = 26,005.60 × 18,538.40
  4. Step 4: Simplify right side
    18,538.40x = 482,102,215.04
  5. Step 5: Solve for x
    x = 482,102,215.04/18,538.40
  6. Step 6: Final answer
    x = 26,005.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.