Home / 20,529.05-28,315.98-12,575.25

Finding the Fourth Proportional to 20,529.05, 28,315.98 and 12,575.25

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Solution

The fourth proportional to 20,529.05, 28,315.98 and 12,575.25 is: 17,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.05 : 28,315.98 = 12,575.25 : x
  2. Step 2: Convert to fraction form
    20,529.05/28,315.98 = 12,575.25/x
  3. Step 3: Cross multiply
    20,529.05x = 28,315.98 × 12,575.25
  4. Step 4: Simplify right side
    20,529.05x = 356,080,527.50
  5. Step 5: Solve for x
    x = 356,080,527.50/20,529.05
  6. Step 6: Final answer
    x = 17,345.21

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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.