Home / 21,124.54-29,125.40-13,557.52

Finding the Fourth Proportional to 21,124.54, 29,125.40 and 13,557.52

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Solution

The fourth proportional to 21,124.54, 29,125.40 and 13,557.52 is: 18,692.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.54 : 29,125.40 = 13,557.52 : x
  2. Step 2: Convert to fraction form
    21,124.54/29,125.40 = 13,557.52/x
  3. Step 3: Cross multiply
    21,124.54x = 29,125.40 × 13,557.52
  4. Step 4: Simplify right side
    21,124.54x = 394,868,193.01
  5. Step 5: Solve for x
    x = 394,868,193.01/21,124.54
  6. Step 6: Final answer
    x = 18,692.39

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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.