Home / 28,191.20-38,903.34-15,444.63

Finding the Fourth Proportional to 28,191.20, 38,903.34 and 15,444.63

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Solution

The fourth proportional to 28,191.20, 38,903.34 and 15,444.63 is: 21,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.20 : 38,903.34 = 15,444.63 : x
  2. Step 2: Convert to fraction form
    28,191.20/38,903.34 = 15,444.63/x
  3. Step 3: Cross multiply
    28,191.20x = 38,903.34 × 15,444.63
  4. Step 4: Simplify right side
    28,191.20x = 600,847,692.06
  5. Step 5: Solve for x
    x = 600,847,692.06/28,191.20
  6. Step 6: Final answer
    x = 21,313.31

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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.