Home / 20,925.49-28,866.51-13,363.87

Finding the Fourth Proportional to 20,925.49, 28,866.51 and 13,363.87

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Solution

The fourth proportional to 20,925.49, 28,866.51 and 13,363.87 is: 18,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.49 : 28,866.51 = 13,363.87 : x
  2. Step 2: Convert to fraction form
    20,925.49/28,866.51 = 13,363.87/x
  3. Step 3: Cross multiply
    20,925.49x = 28,866.51 × 13,363.87
  4. Step 4: Simplify right side
    20,925.49x = 385,768,286.99
  5. Step 5: Solve for x
    x = 385,768,286.99/20,925.49
  6. Step 6: Final answer
    x = 18,435.33

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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.