Home / 15,869.32-21,889.71-10,211.42

Finding the Fourth Proportional to 15,869.32, 21,889.71 and 10,211.42

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Solution

The fourth proportional to 15,869.32, 21,889.71 and 10,211.42 is: 14,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.32 : 21,889.71 = 10,211.42 : x
  2. Step 2: Convert to fraction form
    15,869.32/21,889.71 = 10,211.42/x
  3. Step 3: Cross multiply
    15,869.32x = 21,889.71 × 10,211.42
  4. Step 4: Simplify right side
    15,869.32x = 223,525,022.49
  5. Step 5: Solve for x
    x = 223,525,022.49/15,869.32
  6. Step 6: Final answer
    x = 14,085.36

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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.