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Finding the Fourth Proportional to 21,488.58, 32,085.81 and 19,252.98

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Solution

The fourth proportional to 21,488.58, 32,085.81 and 19,252.98 is: 28,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.58 : 32,085.81 = 19,252.98 : x
  2. Step 2: Convert to fraction form
    21,488.58/32,085.81 = 19,252.98/x
  3. Step 3: Cross multiply
    21,488.58x = 32,085.81 × 19,252.98
  4. Step 4: Simplify right side
    21,488.58x = 617,747,458.21
  5. Step 5: Solve for x
    x = 617,747,458.21/21,488.58
  6. Step 6: Final answer
    x = 28,747.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.