Home / 28,142.48-42,194.04-12,339.92

Finding the Fourth Proportional to 28,142.48, 42,194.04 and 12,339.92

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Solution

The fourth proportional to 28,142.48, 42,194.04 and 12,339.92 is: 18,501.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.48 : 42,194.04 = 12,339.92 : x
  2. Step 2: Convert to fraction form
    28,142.48/42,194.04 = 12,339.92/x
  3. Step 3: Cross multiply
    28,142.48x = 42,194.04 × 12,339.92
  4. Step 4: Simplify right side
    28,142.48x = 520,671,078.08
  5. Step 5: Solve for x
    x = 520,671,078.08/28,142.48
  6. Step 6: Final answer
    x = 18,501.25

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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.