Home / 28,125.41-38,813.63-15,379.39

Finding the Fourth Proportional to 28,125.41, 38,813.63 and 15,379.39

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Solution

The fourth proportional to 28,125.41, 38,813.63 and 15,379.39 is: 21,223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.41 : 38,813.63 = 15,379.39 : x
  2. Step 2: Convert to fraction form
    28,125.41/38,813.63 = 15,379.39/x
  3. Step 3: Cross multiply
    28,125.41x = 38,813.63 × 15,379.39
  4. Step 4: Simplify right side
    28,125.41x = 596,929,953.09
  5. Step 5: Solve for x
    x = 596,929,953.09/28,125.41
  6. Step 6: Final answer
    x = 21,223.87

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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.