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Finding the Fourth Proportional to 17,619.18, 26,428.74 and 7,223.64

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Solution

The fourth proportional to 17,619.18, 26,428.74 and 7,223.64 is: 10,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.18 : 26,428.74 = 7,223.64 : x
  2. Step 2: Convert to fraction form
    17,619.18/26,428.74 = 7,223.64/x
  3. Step 3: Cross multiply
    17,619.18x = 26,428.74 × 7,223.64
  4. Step 4: Simplify right side
    17,619.18x = 190,911,703.41
  5. Step 5: Solve for x
    x = 190,911,703.41/17,619.18
  6. Step 6: Final answer
    x = 10,835.45

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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.