Home / 10,665.40-16,009.74-4,429.80

Finding the Fourth Proportional to 10,665.40, 16,009.74 and 4,429.80

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Solution

The fourth proportional to 10,665.40, 16,009.74 and 4,429.80 is: 6,649.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.40 : 16,009.74 = 4,429.80 : x
  2. Step 2: Convert to fraction form
    10,665.40/16,009.74 = 4,429.80/x
  3. Step 3: Cross multiply
    10,665.40x = 16,009.74 × 4,429.80
  4. Step 4: Simplify right side
    10,665.40x = 70,919,946.25
  5. Step 5: Solve for x
    x = 70,919,946.25/10,665.40
  6. Step 6: Final answer
    x = 6,649.53

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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.