Home / 28,412.76-39,209.60-15,837.50

Finding the Fourth Proportional to 28,412.76, 39,209.60 and 15,837.50

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Solution

The fourth proportional to 28,412.76, 39,209.60 and 15,837.50 is: 21,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.76 : 39,209.60 = 15,837.50 : x
  2. Step 2: Convert to fraction form
    28,412.76/39,209.60 = 15,837.50/x
  3. Step 3: Cross multiply
    28,412.76x = 39,209.60 × 15,837.50
  4. Step 4: Simplify right side
    28,412.76x = 620,982,040
  5. Step 5: Solve for x
    x = 620,982,040/28,412.76
  6. Step 6: Final answer
    x = 21,855.75

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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.