Home / 28,381.72-42,563.52-9,402.88

Finding the Fourth Proportional to 28,381.72, 42,563.52 and 9,402.88

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Solution

The fourth proportional to 28,381.72, 42,563.52 and 9,402.88 is: 14,101.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.72 : 42,563.52 = 9,402.88 : x
  2. Step 2: Convert to fraction form
    28,381.72/42,563.52 = 9,402.88/x
  3. Step 3: Cross multiply
    28,381.72x = 42,563.52 × 9,402.88
  4. Step 4: Simplify right side
    28,381.72x = 400,219,670.94
  5. Step 5: Solve for x
    x = 400,219,670.94/28,381.72
  6. Step 6: Final answer
    x = 14,101.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.