Home / 15,115.77-20,852.51-13,016.25

Finding the Fourth Proportional to 15,115.77, 20,852.51 and 13,016.25

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Solution

The fourth proportional to 15,115.77, 20,852.51 and 13,016.25 is: 17,956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.77 : 20,852.51 = 13,016.25 : x
  2. Step 2: Convert to fraction form
    15,115.77/20,852.51 = 13,016.25/x
  3. Step 3: Cross multiply
    15,115.77x = 20,852.51 × 13,016.25
  4. Step 4: Simplify right side
    15,115.77x = 271,421,418.21
  5. Step 5: Solve for x
    x = 271,421,418.21/15,115.77
  6. Step 6: Final answer
    x = 17,956.18

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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.