Home / 19,540.90-26,978.67-15,056.14

Finding the Fourth Proportional to 19,540.90, 26,978.67 and 15,056.14

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Solution

The fourth proportional to 19,540.90, 26,978.67 and 15,056.14 is: 20,786.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.90 : 26,978.67 = 15,056.14 : x
  2. Step 2: Convert to fraction form
    19,540.90/26,978.67 = 15,056.14/x
  3. Step 3: Cross multiply
    19,540.90x = 26,978.67 × 15,056.14
  4. Step 4: Simplify right side
    19,540.90x = 406,194,632.53
  5. Step 5: Solve for x
    x = 406,194,632.53/19,540.90
  6. Step 6: Final answer
    x = 20,786.89

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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.