Home / 11,325.68-16,985.28-6,945.20

Finding the Fourth Proportional to 11,325.68, 16,985.28 and 6,945.20

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Solution

The fourth proportional to 11,325.68, 16,985.28 and 6,945.20 is: 10,415.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.68 : 16,985.28 = 6,945.20 : x
  2. Step 2: Convert to fraction form
    11,325.68/16,985.28 = 6,945.20/x
  3. Step 3: Cross multiply
    11,325.68x = 16,985.28 × 6,945.20
  4. Step 4: Simplify right side
    11,325.68x = 117,966,166.66
  5. Step 5: Solve for x
    x = 117,966,166.66/11,325.68
  6. Step 6: Final answer
    x = 10,415.81

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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.