Home / 15,117.41-20,862.10-8,403.66

Finding the Fourth Proportional to 15,117.41, 20,862.10 and 8,403.66

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Solution

The fourth proportional to 15,117.41, 20,862.10 and 8,403.66 is: 11,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.41 : 20,862.10 = 8,403.66 : x
  2. Step 2: Convert to fraction form
    15,117.41/20,862.10 = 8,403.66/x
  3. Step 3: Cross multiply
    15,117.41x = 20,862.10 × 8,403.66
  4. Step 4: Simplify right side
    15,117.41x = 175,318,005.79
  5. Step 5: Solve for x
    x = 175,318,005.79/15,117.41
  6. Step 6: Final answer
    x = 11,597.09

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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.