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Finding the Fourth Proportional to 19,437.76, 26,822.40 and 11,480.32

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Solution

The fourth proportional to 19,437.76, 26,822.40 and 11,480.32 is: 15,841.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,437.76 : 26,822.40 = 11,480.32 : x
  2. Step 2: Convert to fraction form
    19,437.76/26,822.40 = 11,480.32/x
  3. Step 3: Cross multiply
    19,437.76x = 26,822.40 × 11,480.32
  4. Step 4: Simplify right side
    19,437.76x = 307,929,735.17
  5. Step 5: Solve for x
    x = 307,929,735.17/19,437.76
  6. Step 6: Final answer
    x = 15,841.83

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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.