Home / 15,508.63-21,392.31-13,523.95

Finding the Fourth Proportional to 15,508.63, 21,392.31 and 13,523.95

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Solution

The fourth proportional to 15,508.63, 21,392.31 and 13,523.95 is: 18,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.63 : 21,392.31 = 13,523.95 : x
  2. Step 2: Convert to fraction form
    15,508.63/21,392.31 = 13,523.95/x
  3. Step 3: Cross multiply
    15,508.63x = 21,392.31 × 13,523.95
  4. Step 4: Simplify right side
    15,508.63x = 289,308,530.82
  5. Step 5: Solve for x
    x = 289,308,530.82/15,508.63
  6. Step 6: Final answer
    x = 18,654.68

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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.