Home / 15,117.27-20,854.58-13,017.75

Finding the Fourth Proportional to 15,117.27, 20,854.58 and 13,017.75

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Solution

The fourth proportional to 15,117.27, 20,854.58 and 13,017.75 is: 17,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.27 : 20,854.58 = 13,017.75 : x
  2. Step 2: Convert to fraction form
    15,117.27/20,854.58 = 13,017.75/x
  3. Step 3: Cross multiply
    15,117.27x = 20,854.58 × 13,017.75
  4. Step 4: Simplify right side
    15,117.27x = 271,479,643.71
  5. Step 5: Solve for x
    x = 271,479,643.71/15,117.27
  6. Step 6: Final answer
    x = 17,958.25

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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.