Home / 13,385.25-18,463.95-8,347.05

Finding the Fourth Proportional to 13,385.25, 18,463.95 and 8,347.05

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Solution

The fourth proportional to 13,385.25, 18,463.95 and 8,347.05 is: 11,514.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.25 : 18,463.95 = 8,347.05 : x
  2. Step 2: Convert to fraction form
    13,385.25/18,463.95 = 8,347.05/x
  3. Step 3: Cross multiply
    13,385.25x = 18,463.95 × 8,347.05
  4. Step 4: Simplify right side
    13,385.25x = 154,119,513.85
  5. Step 5: Solve for x
    x = 154,119,513.85/13,385.25
  6. Step 6: Final answer
    x = 11,514.13

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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.