Home / 13,775.16-20,665.40-5,877.54

Finding the Fourth Proportional to 13,775.16, 20,665.40 and 5,877.54

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Solution

The fourth proportional to 13,775.16, 20,665.40 and 5,877.54 is: 8,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.16 : 20,665.40 = 5,877.54 : x
  2. Step 2: Convert to fraction form
    13,775.16/20,665.40 = 5,877.54/x
  3. Step 3: Cross multiply
    13,775.16x = 20,665.40 × 5,877.54
  4. Step 4: Simplify right side
    13,775.16x = 121,461,715.12
  5. Step 5: Solve for x
    x = 121,461,715.12/13,775.16
  6. Step 6: Final answer
    x = 8,817.44

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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.