Home / 15,117.84-20,862.63-8,403.75

Finding the Fourth Proportional to 15,117.84, 20,862.63 and 8,403.75

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Solution

The fourth proportional to 15,117.84, 20,862.63 and 8,403.75 is: 11,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.84 : 20,862.63 = 8,403.75 : x
  2. Step 2: Convert to fraction form
    15,117.84/20,862.63 = 8,403.75/x
  3. Step 3: Cross multiply
    15,117.84x = 20,862.63 × 8,403.75
  4. Step 4: Simplify right side
    15,117.84x = 175,324,326.86
  5. Step 5: Solve for x
    x = 175,324,326.86/15,117.84
  6. Step 6: Final answer
    x = 11,597.18

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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.