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Finding the Fourth Proportional to 17,920.47, 26,883.95 and 7,384.63

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Solution

The fourth proportional to 17,920.47, 26,883.95 and 7,384.63 is: 11,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.47 : 26,883.95 = 7,384.63 : x
  2. Step 2: Convert to fraction form
    17,920.47/26,883.95 = 7,384.63/x
  3. Step 3: Cross multiply
    17,920.47x = 26,883.95 × 7,384.63
  4. Step 4: Simplify right side
    17,920.47x = 198,528,023.69
  5. Step 5: Solve for x
    x = 198,528,023.69/17,920.47
  6. Step 6: Final answer
    x = 11,078.28

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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.