Home / 20,307.87-28,049.63-15,226.11

Finding the Fourth Proportional to 20,307.87, 28,049.63 and 15,226.11

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Solution

The fourth proportional to 20,307.87, 28,049.63 and 15,226.11 is: 21,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.87 : 28,049.63 = 15,226.11 : x
  2. Step 2: Convert to fraction form
    20,307.87/28,049.63 = 15,226.11/x
  3. Step 3: Cross multiply
    20,307.87x = 28,049.63 × 15,226.11
  4. Step 4: Simplify right side
    20,307.87x = 427,086,675.71
  5. Step 5: Solve for x
    x = 427,086,675.71/20,307.87
  6. Step 6: Final answer
    x = 21,030.60

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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.