Home / 16,820.47-25,235.14-8,389.45

Finding the Fourth Proportional to 16,820.47, 25,235.14 and 8,389.45

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Solution

The fourth proportional to 16,820.47, 25,235.14 and 8,389.45 is: 12,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.47 : 25,235.14 = 8,389.45 : x
  2. Step 2: Convert to fraction form
    16,820.47/25,235.14 = 8,389.45/x
  3. Step 3: Cross multiply
    16,820.47x = 25,235.14 × 8,389.45
  4. Step 4: Simplify right side
    16,820.47x = 211,708,945.27
  5. Step 5: Solve for x
    x = 211,708,945.27/16,820.47
  6. Step 6: Final answer
    x = 12,586.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.