Home / 13,575.65-18,743.55-8,478.95

Finding the Fourth Proportional to 13,575.65, 18,743.55 and 8,478.95

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Solution

The fourth proportional to 13,575.65, 18,743.55 and 8,478.95 is: 11,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.65 : 18,743.55 = 8,478.95 : x
  2. Step 2: Convert to fraction form
    13,575.65/18,743.55 = 8,478.95/x
  3. Step 3: Cross multiply
    13,575.65x = 18,743.55 × 8,478.95
  4. Step 4: Simplify right side
    13,575.65x = 158,925,623.27
  5. Step 5: Solve for x
    x = 158,925,623.27/13,575.65
  6. Step 6: Final answer
    x = 11,706.67

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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.