Home / 21,234.80-29,319.25-14,875.50

Finding the Fourth Proportional to 21,234.80, 29,319.25 and 14,875.50

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Solution

The fourth proportional to 21,234.80, 29,319.25 and 14,875.50 is: 20,538.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.80 : 29,319.25 = 14,875.50 : x
  2. Step 2: Convert to fraction form
    21,234.80/29,319.25 = 14,875.50/x
  3. Step 3: Cross multiply
    21,234.80x = 29,319.25 × 14,875.50
  4. Step 4: Simplify right side
    21,234.80x = 436,138,604.02
  5. Step 5: Solve for x
    x = 436,138,604.02/21,234.80
  6. Step 6: Final answer
    x = 20,538.86

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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.