Home / 15,873.52-21,915.42-10,218.10

Finding the Fourth Proportional to 15,873.52, 21,915.42 and 10,218.10

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Solution

The fourth proportional to 15,873.52, 21,915.42 and 10,218.10 is: 14,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.52 : 21,915.42 = 10,218.10 : x
  2. Step 2: Convert to fraction form
    15,873.52/21,915.42 = 10,218.10/x
  3. Step 3: Cross multiply
    15,873.52x = 21,915.42 × 10,218.10
  4. Step 4: Simplify right side
    15,873.52x = 223,933,953.10
  5. Step 5: Solve for x
    x = 223,933,953.10/15,873.52
  6. Step 6: Final answer
    x = 14,107.39

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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.