Home / 15,284.18-21,101.37-9,987.86

Finding the Fourth Proportional to 15,284.18, 21,101.37 and 9,987.86

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Solution

The fourth proportional to 15,284.18, 21,101.37 and 9,987.86 is: 13,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.18 : 21,101.37 = 9,987.86 : x
  2. Step 2: Convert to fraction form
    15,284.18/21,101.37 = 9,987.86/x
  3. Step 3: Cross multiply
    15,284.18x = 21,101.37 × 9,987.86
  4. Step 4: Simplify right side
    15,284.18x = 210,757,529.37
  5. Step 5: Solve for x
    x = 210,757,529.37/15,284.18
  6. Step 6: Final answer
    x = 13,789.26

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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.