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Finding the Fourth Proportional to 14,980.08, 20,680.00 and 9,316.65

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Solution

The fourth proportional to 14,980.08, 20,680.00 and 9,316.65 is: 12,861.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.08 : 20,680.00 = 9,316.65 : x
  2. Step 2: Convert to fraction form
    14,980.08/20,680.00 = 9,316.65/x
  3. Step 3: Cross multiply
    14,980.08x = 20,680.00 × 9,316.65
  4. Step 4: Simplify right side
    14,980.08x = 192,668,315.22
  5. Step 5: Solve for x
    x = 192,668,315.22/14,980.08
  6. Step 6: Final answer
    x = 12,861.63

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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.