Home / 20,929.44-28,886.72-12,975.24

Finding the Fourth Proportional to 20,929.44, 28,886.72 and 12,975.24

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Solution

The fourth proportional to 20,929.44, 28,886.72 and 12,975.24 is: 17,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.44 : 28,886.72 = 12,975.24 : x
  2. Step 2: Convert to fraction form
    20,929.44/28,886.72 = 12,975.24/x
  3. Step 3: Cross multiply
    20,929.44x = 28,886.72 × 12,975.24
  4. Step 4: Simplify right side
    20,929.44x = 374,812,124.81
  5. Step 5: Solve for x
    x = 374,812,124.81/20,929.44
  6. Step 6: Final answer
    x = 17,908.37

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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.