Home / 19,488.40-26,899.88-16,864

Finding the Fourth Proportional to 19,488.40, 26,899.88 and 16,864

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Solution

The fourth proportional to 19,488.40, 26,899.88 and 16,864 is: 23,277.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.40 : 26,899.88 = 16,864 : x
  2. Step 2: Convert to fraction form
    19,488.40/26,899.88 = 16,864/x
  3. Step 3: Cross multiply
    19,488.40x = 26,899.88 × 16,864
  4. Step 4: Simplify right side
    19,488.40x = 453,639,576.32
  5. Step 5: Solve for x
    x = 453,639,576.32/19,488.40
  6. Step 6: Final answer
    x = 23,277.42

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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.