Home / 10,685.60-16,009.20-9,456.80

Finding the Fourth Proportional to 10,685.60, 16,009.20 and 9,456.80

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Solution

The fourth proportional to 10,685.60, 16,009.20 and 9,456.80 is: 14,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,685.60 : 16,009.20 = 9,456.80 : x
  2. Step 2: Convert to fraction form
    10,685.60/16,009.20 = 9,456.80/x
  3. Step 3: Cross multiply
    10,685.60x = 16,009.20 × 9,456.80
  4. Step 4: Simplify right side
    10,685.60x = 151,395,802.56
  5. Step 5: Solve for x
    x = 151,395,802.56/10,685.60
  6. Step 6: Final answer
    x = 14,168.21

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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.