Home / 15,291.72-21,093.18-10,117.56

Finding the Fourth Proportional to 15,291.72, 21,093.18 and 10,117.56

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Solution

The fourth proportional to 15,291.72, 21,093.18 and 10,117.56 is: 13,956.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.72 : 21,093.18 = 10,117.56 : x
  2. Step 2: Convert to fraction form
    15,291.72/21,093.18 = 10,117.56/x
  3. Step 3: Cross multiply
    15,291.72x = 21,093.18 × 10,117.56
  4. Step 4: Simplify right side
    15,291.72x = 213,411,514.24
  5. Step 5: Solve for x
    x = 213,411,514.24/15,291.72
  6. Step 6: Final answer
    x = 13,956.02

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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.