Home / 11,125.21-16,688.02-5,200.47

Finding the Fourth Proportional to 11,125.21, 16,688.02 and 5,200.47

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Solution

The fourth proportional to 11,125.21, 16,688.02 and 5,200.47 is: 7,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.21 : 16,688.02 = 5,200.47 : x
  2. Step 2: Convert to fraction form
    11,125.21/16,688.02 = 5,200.47/x
  3. Step 3: Cross multiply
    11,125.21x = 16,688.02 × 5,200.47
  4. Step 4: Simplify right side
    11,125.21x = 86,785,547.37
  5. Step 5: Solve for x
    x = 86,785,547.37/11,125.21
  6. Step 6: Final answer
    x = 7,800.80

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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.