Home / 20,637.44-28,488.48-12,256.64

Finding the Fourth Proportional to 20,637.44, 28,488.48 and 12,256.64

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Solution

The fourth proportional to 20,637.44, 28,488.48 and 12,256.64 is: 16,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.44 : 28,488.48 = 12,256.64 : x
  2. Step 2: Convert to fraction form
    20,637.44/28,488.48 = 12,256.64/x
  3. Step 3: Cross multiply
    20,637.44x = 28,488.48 × 12,256.64
  4. Step 4: Simplify right side
    20,637.44x = 349,173,043.51
  5. Step 5: Solve for x
    x = 349,173,043.51/20,637.44
  6. Step 6: Final answer
    x = 16,919.40

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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.