Home / 20,757.87-28,677.06-13,604.76

Finding the Fourth Proportional to 20,757.87, 28,677.06 and 13,604.76

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Solution

The fourth proportional to 20,757.87, 28,677.06 and 13,604.76 is: 18,795.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.87 : 28,677.06 = 13,604.76 : x
  2. Step 2: Convert to fraction form
    20,757.87/28,677.06 = 13,604.76/x
  3. Step 3: Cross multiply
    20,757.87x = 28,677.06 × 13,604.76
  4. Step 4: Simplify right side
    20,757.87x = 390,144,307.40
  5. Step 5: Solve for x
    x = 390,144,307.40/20,757.87
  6. Step 6: Final answer
    x = 18,795.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.