Home / 14,742.80-20,345.21-8,028.51

Finding the Fourth Proportional to 14,742.80, 20,345.21 and 8,028.51

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Solution

The fourth proportional to 14,742.80, 20,345.21 and 8,028.51 is: 11,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,742.80 : 20,345.21 = 8,028.51 : x
  2. Step 2: Convert to fraction form
    14,742.80/20,345.21 = 8,028.51/x
  3. Step 3: Cross multiply
    14,742.80x = 20,345.21 × 8,028.51
  4. Step 4: Simplify right side
    14,742.80x = 163,341,721.94
  5. Step 5: Solve for x
    x = 163,341,721.94/14,742.80
  6. Step 6: Final answer
    x = 11,079.42

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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.