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Finding the Fourth Proportional to 12,303.95, 16,986.47 and 8,124.35

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Solution

The fourth proportional to 12,303.95, 16,986.47 and 8,124.35 is: 11,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.95 : 16,986.47 = 8,124.35 : x
  2. Step 2: Convert to fraction form
    12,303.95/16,986.47 = 8,124.35/x
  3. Step 3: Cross multiply
    12,303.95x = 16,986.47 × 8,124.35
  4. Step 4: Simplify right side
    12,303.95x = 138,003,901.99
  5. Step 5: Solve for x
    x = 138,003,901.99/12,303.95
  6. Step 6: Final answer
    x = 11,216.23

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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.