Home / 20,586.48-28,409.52-12,086.40

Finding the Fourth Proportional to 20,586.48, 28,409.52 and 12,086.40

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Solution

The fourth proportional to 20,586.48, 28,409.52 and 12,086.40 is: 16,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.48 : 28,409.52 = 12,086.40 : x
  2. Step 2: Convert to fraction form
    20,586.48/28,409.52 = 12,086.40/x
  3. Step 3: Cross multiply
    20,586.48x = 28,409.52 × 12,086.40
  4. Step 4: Simplify right side
    20,586.48x = 343,368,822.53
  5. Step 5: Solve for x
    x = 343,368,822.53/20,586.48
  6. Step 6: Final answer
    x = 16,679.34

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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.