Home / 20,925.27-28,876.90-11,365.16

Finding the Fourth Proportional to 20,925.27, 28,876.90 and 11,365.16

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Solution

The fourth proportional to 20,925.27, 28,876.90 and 11,365.16 is: 15,683.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.27 : 28,876.90 = 11,365.16 : x
  2. Step 2: Convert to fraction form
    20,925.27/28,876.90 = 11,365.16/x
  3. Step 3: Cross multiply
    20,925.27x = 28,876.90 × 11,365.16
  4. Step 4: Simplify right side
    20,925.27x = 328,190,588.80
  5. Step 5: Solve for x
    x = 328,190,588.80/20,925.27
  6. Step 6: Final answer
    x = 15,683.94

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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.