Home / 20,579.90-30,885.47-13,557.52

Finding the Fourth Proportional to 20,579.90, 30,885.47 and 13,557.52

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Solution

The fourth proportional to 20,579.90, 30,885.47 and 13,557.52 is: 20,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.90 : 30,885.47 = 13,557.52 : x
  2. Step 2: Convert to fraction form
    20,579.90/30,885.47 = 13,557.52/x
  3. Step 3: Cross multiply
    20,579.90x = 30,885.47 × 13,557.52
  4. Step 4: Simplify right side
    20,579.90x = 418,730,155.02
  5. Step 5: Solve for x
    x = 418,730,155.02/20,579.90
  6. Step 6: Final answer
    x = 20,346.56

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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.