Home / 14,742.40-20,370.41-11,782.66

Finding the Fourth Proportional to 14,742.40, 20,370.41 and 11,782.66

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Solution

The fourth proportional to 14,742.40, 20,370.41 and 11,782.66 is: 16,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,742.40 : 20,370.41 = 11,782.66 : x
  2. Step 2: Convert to fraction form
    14,742.40/20,370.41 = 11,782.66/x
  3. Step 3: Cross multiply
    14,742.40x = 20,370.41 × 11,782.66
  4. Step 4: Simplify right side
    14,742.40x = 240,017,615.09
  5. Step 5: Solve for x
    x = 240,017,615.09/14,742.40
  6. Step 6: Final answer
    x = 16,280.77

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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.