Home / 18,506.88-25,561.31-12,528.14

Finding the Fourth Proportional to 18,506.88, 25,561.31 and 12,528.14

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Solution

The fourth proportional to 18,506.88, 25,561.31 and 12,528.14 is: 17,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.88 : 25,561.31 = 12,528.14 : x
  2. Step 2: Convert to fraction form
    18,506.88/25,561.31 = 12,528.14/x
  3. Step 3: Cross multiply
    18,506.88x = 25,561.31 × 12,528.14
  4. Step 4: Simplify right side
    18,506.88x = 320,235,479.82
  5. Step 5: Solve for x
    x = 320,235,479.82/18,506.88
  6. Step 6: Final answer
    x = 17,303.59

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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.