Home / 20,581.90-30,888.47-13,559.52

Finding the Fourth Proportional to 20,581.90, 30,888.47 and 13,559.52

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Solution

The fourth proportional to 20,581.90, 30,888.47 and 13,559.52 is: 20,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.90 : 30,888.47 = 13,559.52 : x
  2. Step 2: Convert to fraction form
    20,581.90/30,888.47 = 13,559.52/x
  3. Step 3: Cross multiply
    20,581.90x = 30,888.47 × 13,559.52
  4. Step 4: Simplify right side
    20,581.90x = 418,832,826.73
  5. Step 5: Solve for x
    x = 418,832,826.73/20,581.90
  6. Step 6: Final answer
    x = 20,349.57

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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.