Home / 28,164.98-38,867.09-15,417.86

Finding the Fourth Proportional to 28,164.98, 38,867.09 and 15,417.86

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Solution

The fourth proportional to 28,164.98, 38,867.09 and 15,417.86 is: 21,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.98 : 38,867.09 = 15,417.86 : x
  2. Step 2: Convert to fraction form
    28,164.98/38,867.09 = 15,417.86/x
  3. Step 3: Cross multiply
    28,164.98x = 38,867.09 × 15,417.86
  4. Step 4: Simplify right side
    28,164.98x = 599,247,080.80
  5. Step 5: Solve for x
    x = 599,247,080.80/28,164.98
  6. Step 6: Final answer
    x = 21,276.32

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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.