Home / 12,438.48-18,671.16-5,047.92

Finding the Fourth Proportional to 12,438.48, 18,671.16 and 5,047.92

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Solution

The fourth proportional to 12,438.48, 18,671.16 and 5,047.92 is: 7,577.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.48 : 18,671.16 = 5,047.92 : x
  2. Step 2: Convert to fraction form
    12,438.48/18,671.16 = 5,047.92/x
  3. Step 3: Cross multiply
    12,438.48x = 18,671.16 × 5,047.92
  4. Step 4: Simplify right side
    12,438.48x = 94,250,521.99
  5. Step 5: Solve for x
    x = 94,250,521.99/12,438.48
  6. Step 6: Final answer
    x = 7,577.33

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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.