Home / 28,570.07-42,882.74-13,789.39

Finding the Fourth Proportional to 28,570.07, 42,882.74 and 13,789.39

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Solution

The fourth proportional to 28,570.07, 42,882.74 and 13,789.39 is: 20,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.07 : 42,882.74 = 13,789.39 : x
  2. Step 2: Convert to fraction form
    28,570.07/42,882.74 = 13,789.39/x
  3. Step 3: Cross multiply
    28,570.07x = 42,882.74 × 13,789.39
  4. Step 4: Simplify right side
    28,570.07x = 591,326,753.40
  5. Step 5: Solve for x
    x = 591,326,753.40/28,570.07
  6. Step 6: Final answer
    x = 20,697.42

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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.