Home / 20,763.65-28,656.23-11,812.55

Finding the Fourth Proportional to 20,763.65, 28,656.23 and 11,812.55

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Solution

The fourth proportional to 20,763.65, 28,656.23 and 11,812.55 is: 16,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.65 : 28,656.23 = 11,812.55 : x
  2. Step 2: Convert to fraction form
    20,763.65/28,656.23 = 11,812.55/x
  3. Step 3: Cross multiply
    20,763.65x = 28,656.23 × 11,812.55
  4. Step 4: Simplify right side
    20,763.65x = 338,502,947.34
  5. Step 5: Solve for x
    x = 338,502,947.34/20,763.65
  6. Step 6: Final answer
    x = 16,302.67

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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.