Home / 28,189.68-42,252.84-13,386.48

Finding the Fourth Proportional to 28,189.68, 42,252.84 and 13,386.48

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Solution

The fourth proportional to 28,189.68, 42,252.84 and 13,386.48 is: 20,064.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.68 : 42,252.84 = 13,386.48 : x
  2. Step 2: Convert to fraction form
    28,189.68/42,252.84 = 13,386.48/x
  3. Step 3: Cross multiply
    28,189.68x = 42,252.84 × 13,386.48
  4. Step 4: Simplify right side
    28,189.68x = 565,616,797.60
  5. Step 5: Solve for x
    x = 565,616,797.60/28,189.68
  6. Step 6: Final answer
    x = 20,064.68

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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.