Home / 15,117.15-20,854.40-13,017.63

Finding the Fourth Proportional to 15,117.15, 20,854.40 and 13,017.63

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Solution

The fourth proportional to 15,117.15, 20,854.40 and 13,017.63 is: 17,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.15 : 20,854.40 = 13,017.63 : x
  2. Step 2: Convert to fraction form
    15,117.15/20,854.40 = 13,017.63/x
  3. Step 3: Cross multiply
    15,117.15x = 20,854.40 × 13,017.63
  4. Step 4: Simplify right side
    15,117.15x = 271,474,791.34
  5. Step 5: Solve for x
    x = 271,474,791.34/15,117.15
  6. Step 6: Final answer
    x = 17,958.07

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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.