Home / 15,870.73-21,891.71-10,212.86

Finding the Fourth Proportional to 15,870.73, 21,891.71 and 10,212.86

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Solution

The fourth proportional to 15,870.73, 21,891.71 and 10,212.86 is: 14,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.73 : 21,891.71 = 10,212.86 : x
  2. Step 2: Convert to fraction form
    15,870.73/21,891.71 = 10,212.86/x
  3. Step 3: Cross multiply
    15,870.73x = 21,891.71 × 10,212.86
  4. Step 4: Simplify right side
    15,870.73x = 223,576,969.39
  5. Step 5: Solve for x
    x = 223,576,969.39/15,870.73
  6. Step 6: Final answer
    x = 14,087.38

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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.