Home / 20,559.15-28,374.84-15,529.05

Finding the Fourth Proportional to 20,559.15, 28,374.84 and 15,529.05

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Solution

The fourth proportional to 20,559.15, 28,374.84 and 15,529.05 is: 21,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.15 : 28,374.84 = 15,529.05 : x
  2. Step 2: Convert to fraction form
    20,559.15/28,374.84 = 15,529.05/x
  3. Step 3: Cross multiply
    20,559.15x = 28,374.84 × 15,529.05
  4. Step 4: Simplify right side
    20,559.15x = 440,634,309.10
  5. Step 5: Solve for x
    x = 440,634,309.10/20,559.15
  6. Step 6: Final answer
    x = 21,432.52

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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.