Home / 28,490.34-39,308.88-19,540.05

Finding the Fourth Proportional to 28,490.34, 39,308.88 and 19,540.05

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Solution

The fourth proportional to 28,490.34, 39,308.88 and 19,540.05 is: 26,959.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.34 : 39,308.88 = 19,540.05 : x
  2. Step 2: Convert to fraction form
    28,490.34/39,308.88 = 19,540.05/x
  3. Step 3: Cross multiply
    28,490.34x = 39,308.88 × 19,540.05
  4. Step 4: Simplify right side
    28,490.34x = 768,097,480.64
  5. Step 5: Solve for x
    x = 768,097,480.64/28,490.34
  6. Step 6: Final answer
    x = 26,959.93

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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.