Home / 16,685.60-25,009.20-6,818.40

Finding the Fourth Proportional to 16,685.60, 25,009.20 and 6,818.40

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Solution

The fourth proportional to 16,685.60, 25,009.20 and 6,818.40 is: 10,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,685.60 : 25,009.20 = 6,818.40 : x
  2. Step 2: Convert to fraction form
    16,685.60/25,009.20 = 6,818.40/x
  3. Step 3: Cross multiply
    16,685.60x = 25,009.20 × 6,818.40
  4. Step 4: Simplify right side
    16,685.60x = 170,522,729.28
  5. Step 5: Solve for x
    x = 170,522,729.28/16,685.60
  6. Step 6: Final answer
    x = 10,219.75

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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.