Home / 12,781.46-19,154.68-6,528.33

Finding the Fourth Proportional to 12,781.46, 19,154.68 and 6,528.33

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Solution

The fourth proportional to 12,781.46, 19,154.68 and 6,528.33 is: 9,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.46 : 19,154.68 = 6,528.33 : x
  2. Step 2: Convert to fraction form
    12,781.46/19,154.68 = 6,528.33/x
  3. Step 3: Cross multiply
    12,781.46x = 19,154.68 × 6,528.33
  4. Step 4: Simplify right side
    12,781.46x = 125,048,055.76
  5. Step 5: Solve for x
    x = 125,048,055.76/12,781.46
  6. Step 6: Final answer
    x = 9,783.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.