Home / 28,352.13-39,128.38-15,607.84

Finding the Fourth Proportional to 28,352.13, 39,128.38 and 15,607.84

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Solution

The fourth proportional to 28,352.13, 39,128.38 and 15,607.84 is: 21,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.13 : 39,128.38 = 15,607.84 : x
  2. Step 2: Convert to fraction form
    28,352.13/39,128.38 = 15,607.84/x
  3. Step 3: Cross multiply
    28,352.13x = 39,128.38 × 15,607.84
  4. Step 4: Simplify right side
    28,352.13x = 610,709,494.50
  5. Step 5: Solve for x
    x = 610,709,494.50/28,352.13
  6. Step 6: Final answer
    x = 21,540.16

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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.