Home / 20,509.08-30,765.36-5,718.02

Finding the Fourth Proportional to 20,509.08, 30,765.36 and 5,718.02

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Solution

The fourth proportional to 20,509.08, 30,765.36 and 5,718.02 is: 8,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.08 : 30,765.36 = 5,718.02 : x
  2. Step 2: Convert to fraction form
    20,509.08/30,765.36 = 5,718.02/x
  3. Step 3: Cross multiply
    20,509.08x = 30,765.36 × 5,718.02
  4. Step 4: Simplify right side
    20,509.08x = 175,916,779.24
  5. Step 5: Solve for x
    x = 175,916,779.24/20,509.08
  6. Step 6: Final answer
    x = 8,577.51

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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.