Home / 15,117.27-20,862.54-8,403

Finding the Fourth Proportional to 15,117.27, 20,862.54 and 8,403

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Solution

The fourth proportional to 15,117.27, 20,862.54 and 8,403 is: 11,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.27 : 20,862.54 = 8,403 : x
  2. Step 2: Convert to fraction form
    15,117.27/20,862.54 = 8,403/x
  3. Step 3: Cross multiply
    15,117.27x = 20,862.54 × 8,403
  4. Step 4: Simplify right side
    15,117.27x = 175,307,923.62
  5. Step 5: Solve for x
    x = 175,307,923.62/15,117.27
  6. Step 6: Final answer
    x = 11,596.53

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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.