Home / 20,709.06-28,583.65-12,758.10

Finding the Fourth Proportional to 20,709.06, 28,583.65 and 12,758.10

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Solution

The fourth proportional to 20,709.06, 28,583.65 and 12,758.10 is: 17,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.06 : 28,583.65 = 12,758.10 : x
  2. Step 2: Convert to fraction form
    20,709.06/28,583.65 = 12,758.10/x
  3. Step 3: Cross multiply
    20,709.06x = 28,583.65 × 12,758.10
  4. Step 4: Simplify right side
    20,709.06x = 364,673,065.07
  5. Step 5: Solve for x
    x = 364,673,065.07/20,709.06
  6. Step 6: Final answer
    x = 17,609.35

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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.