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Finding the Fourth Proportional to 28,038.08, 38,697 and 16,860.08

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Solution

The fourth proportional to 28,038.08, 38,697 and 16,860.08 is: 23,269.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.08 : 38,697 = 16,860.08 : x
  2. Step 2: Convert to fraction form
    28,038.08/38,697 = 16,860.08/x
  3. Step 3: Cross multiply
    28,038.08x = 38,697 × 16,860.08
  4. Step 4: Simplify right side
    28,038.08x = 652,434,515.76
  5. Step 5: Solve for x
    x = 652,434,515.76/28,038.08
  6. Step 6: Final answer
    x = 23,269.59

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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.