Home / 15,390.64-23,085.97-11,885.77

Finding the Fourth Proportional to 15,390.64, 23,085.97 and 11,885.77

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Solution

The fourth proportional to 15,390.64, 23,085.97 and 11,885.77 is: 17,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390.64 : 23,085.97 = 11,885.77 : x
  2. Step 2: Convert to fraction form
    15,390.64/23,085.97 = 11,885.77/x
  3. Step 3: Cross multiply
    15,390.64x = 23,085.97 × 11,885.77
  4. Step 4: Simplify right side
    15,390.64x = 274,394,529.65
  5. Step 5: Solve for x
    x = 274,394,529.65/15,390.64
  6. Step 6: Final answer
    x = 17,828.66

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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.