Home / 15,372.24-21,216.78-10,065.12

Finding the Fourth Proportional to 15,372.24, 21,216.78 and 10,065.12

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Solution

The fourth proportional to 15,372.24, 21,216.78 and 10,065.12 is: 13,891.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.24 : 21,216.78 = 10,065.12 : x
  2. Step 2: Convert to fraction form
    15,372.24/21,216.78 = 10,065.12/x
  3. Step 3: Cross multiply
    15,372.24x = 21,216.78 × 10,065.12
  4. Step 4: Simplify right side
    15,372.24x = 213,549,436.71
  5. Step 5: Solve for x
    x = 213,549,436.71/15,372.24
  6. Step 6: Final answer
    x = 13,891.89

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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.