Home / 28,130.48-42,187.22-9,405.72

Finding the Fourth Proportional to 28,130.48, 42,187.22 and 9,405.72

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Solution

The fourth proportional to 28,130.48, 42,187.22 and 9,405.72 is: 14,105.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.48 : 42,187.22 = 9,405.72 : x
  2. Step 2: Convert to fraction form
    28,130.48/42,187.22 = 9,405.72/x
  3. Step 3: Cross multiply
    28,130.48x = 42,187.22 × 9,405.72
  4. Step 4: Simplify right side
    28,130.48x = 396,801,178.90
  5. Step 5: Solve for x
    x = 396,801,178.90/28,130.48
  6. Step 6: Final answer
    x = 14,105.74

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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.