Home / 13,114.92-19,661.40-5,329.20

Finding the Fourth Proportional to 13,114.92, 19,661.40 and 5,329.20

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Solution

The fourth proportional to 13,114.92, 19,661.40 and 5,329.20 is: 7,989.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.92 : 19,661.40 = 5,329.20 : x
  2. Step 2: Convert to fraction form
    13,114.92/19,661.40 = 5,329.20/x
  3. Step 3: Cross multiply
    13,114.92x = 19,661.40 × 5,329.20
  4. Step 4: Simplify right side
    13,114.92x = 104,779,532.88
  5. Step 5: Solve for x
    x = 104,779,532.88/13,114.92
  6. Step 6: Final answer
    x = 7,989.34

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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.