Home / 20,734.02-31,101-7,579.20

Finding the Fourth Proportional to 20,734.02, 31,101 and 7,579.20

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Solution

The fourth proportional to 20,734.02, 31,101 and 7,579.20 is: 11,368.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.02 : 31,101 = 7,579.20 : x
  2. Step 2: Convert to fraction form
    20,734.02/31,101 = 7,579.20/x
  3. Step 3: Cross multiply
    20,734.02x = 31,101 × 7,579.20
  4. Step 4: Simplify right side
    20,734.02x = 235,720,699.20
  5. Step 5: Solve for x
    x = 235,720,699.20/20,734.02
  6. Step 6: Final answer
    x = 11,368.79

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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.