Home / 18,979.44-26,184-11,903.28

Finding the Fourth Proportional to 18,979.44, 26,184 and 11,903.28

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Solution

The fourth proportional to 18,979.44, 26,184 and 11,903.28 is: 16,421.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.44 : 26,184 = 11,903.28 : x
  2. Step 2: Convert to fraction form
    18,979.44/26,184 = 11,903.28/x
  3. Step 3: Cross multiply
    18,979.44x = 26,184 × 11,903.28
  4. Step 4: Simplify right side
    18,979.44x = 311,675,483.52
  5. Step 5: Solve for x
    x = 311,675,483.52/18,979.44
  6. Step 6: Final answer
    x = 16,421.74

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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.