Home / 20,685.54-28,547.15-11,735.92

Finding the Fourth Proportional to 20,685.54, 28,547.15 and 11,735.92

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Solution

The fourth proportional to 20,685.54, 28,547.15 and 11,735.92 is: 16,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.54 : 28,547.15 = 11,735.92 : x
  2. Step 2: Convert to fraction form
    20,685.54/28,547.15 = 11,735.92/x
  3. Step 3: Cross multiply
    20,685.54x = 28,547.15 × 11,735.92
  4. Step 4: Simplify right side
    20,685.54x = 335,027,068.63
  5. Step 5: Solve for x
    x = 335,027,068.63/20,685.54
  6. Step 6: Final answer
    x = 16,196.20

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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.