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Finding the Fourth Proportional to 14,319.93, 21,479.88 and 8,077.11

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Solution

The fourth proportional to 14,319.93, 21,479.88 and 8,077.11 is: 12,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.93 : 21,479.88 = 8,077.11 : x
  2. Step 2: Convert to fraction form
    14,319.93/21,479.88 = 8,077.11/x
  3. Step 3: Cross multiply
    14,319.93x = 21,479.88 × 8,077.11
  4. Step 4: Simplify right side
    14,319.93x = 173,495,205.76
  5. Step 5: Solve for x
    x = 173,495,205.76/14,319.93
  6. Step 6: Final answer
    x = 12,115.65

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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.