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Finding the Fourth Proportional to 14,980.86, 20,670.87 and 9,317.10

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Solution

The fourth proportional to 14,980.86, 20,670.87 and 9,317.10 is: 12,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.86 : 20,670.87 = 9,317.10 : x
  2. Step 2: Convert to fraction form
    14,980.86/20,670.87 = 9,317.10/x
  3. Step 3: Cross multiply
    14,980.86x = 20,670.87 × 9,317.10
  4. Step 4: Simplify right side
    14,980.86x = 192,592,562.88
  5. Step 5: Solve for x
    x = 192,592,562.88/14,980.86
  6. Step 6: Final answer
    x = 12,855.91

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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.