Home / 14,742.64-20,345.09-8,028.40

Finding the Fourth Proportional to 14,742.64, 20,345.09 and 8,028.40

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Solution

The fourth proportional to 14,742.64, 20,345.09 and 8,028.40 is: 11,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,742.64 : 20,345.09 = 8,028.40 : x
  2. Step 2: Convert to fraction form
    14,742.64/20,345.09 = 8,028.40/x
  3. Step 3: Cross multiply
    14,742.64x = 20,345.09 × 8,028.40
  4. Step 4: Simplify right side
    14,742.64x = 163,338,378.69
  5. Step 5: Solve for x
    x = 163,338,378.69/14,742.64
  6. Step 6: Final answer
    x = 11,079.32

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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.