Home / 20,685.35-28,547.28-11,733.64

Finding the Fourth Proportional to 20,685.35, 28,547.28 and 11,733.64

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Solution

The fourth proportional to 20,685.35, 28,547.28 and 11,733.64 is: 16,193.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.35 : 28,547.28 = 11,733.64 : x
  2. Step 2: Convert to fraction form
    20,685.35/28,547.28 = 11,733.64/x
  3. Step 3: Cross multiply
    20,685.35x = 28,547.28 × 11,733.64
  4. Step 4: Simplify right side
    20,685.35x = 334,963,435.13
  5. Step 5: Solve for x
    x = 334,963,435.13/20,685.35
  6. Step 6: Final answer
    x = 16,193.27

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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.