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Finding the Fourth Proportional to 14,302.90, 21,454.35 and 9,928.90

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Solution

The fourth proportional to 14,302.90, 21,454.35 and 9,928.90 is: 14,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,302.90 : 21,454.35 = 9,928.90 : x
  2. Step 2: Convert to fraction form
    14,302.90/21,454.35 = 9,928.90/x
  3. Step 3: Cross multiply
    14,302.90x = 21,454.35 × 9,928.90
  4. Step 4: Simplify right side
    14,302.90x = 213,018,095.72
  5. Step 5: Solve for x
    x = 213,018,095.72/14,302.90
  6. Step 6: Final answer
    x = 14,893.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.