Home / 15,390.65-23,085.98-11,885.78

Finding the Fourth Proportional to 15,390.65, 23,085.98 and 11,885.78

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Solution

The fourth proportional to 15,390.65, 23,085.98 and 11,885.78 is: 17,828.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390.65 : 23,085.98 = 11,885.78 : x
  2. Step 2: Convert to fraction form
    15,390.65/23,085.98 = 11,885.78/x
  3. Step 3: Cross multiply
    15,390.65x = 23,085.98 × 11,885.78
  4. Step 4: Simplify right side
    15,390.65x = 274,394,704.51
  5. Step 5: Solve for x
    x = 274,394,704.51/15,390.65
  6. Step 6: Final answer
    x = 17,828.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.