Home / 15,867.06-21,885.87-10,208.95

Finding the Fourth Proportional to 15,867.06, 21,885.87 and 10,208.95

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Solution

The fourth proportional to 15,867.06, 21,885.87 and 10,208.95 is: 14,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.06 : 21,885.87 = 10,208.95 : x
  2. Step 2: Convert to fraction form
    15,867.06/21,885.87 = 10,208.95/x
  3. Step 3: Cross multiply
    15,867.06x = 21,885.87 × 10,208.95
  4. Step 4: Simplify right side
    15,867.06x = 223,431,736.11
  5. Step 5: Solve for x
    x = 223,431,736.11/15,867.06
  6. Step 6: Final answer
    x = 14,081.49

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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.