Home / 21,235.80-29,320.63-14,876.50

Finding the Fourth Proportional to 21,235.80, 29,320.63 and 14,876.50

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Solution

The fourth proportional to 21,235.80, 29,320.63 and 14,876.50 is: 20,540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.80 : 29,320.63 = 14,876.50 : x
  2. Step 2: Convert to fraction form
    21,235.80/29,320.63 = 14,876.50/x
  3. Step 3: Cross multiply
    21,235.80x = 29,320.63 × 14,876.50
  4. Step 4: Simplify right side
    21,235.80x = 436,188,352.20
  5. Step 5: Solve for x
    x = 436,188,352.20/21,235.80
  6. Step 6: Final answer
    x = 20,540.24

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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.