Home / 19,671.20-27,156.10-12,508.32

Finding the Fourth Proportional to 19,671.20, 27,156.10 and 12,508.32

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Solution

The fourth proportional to 19,671.20, 27,156.10 and 12,508.32 is: 17,267.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.20 : 27,156.10 = 12,508.32 : x
  2. Step 2: Convert to fraction form
    19,671.20/27,156.10 = 12,508.32/x
  3. Step 3: Cross multiply
    19,671.20x = 27,156.10 × 12,508.32
  4. Step 4: Simplify right side
    19,671.20x = 339,677,188.75
  5. Step 5: Solve for x
    x = 339,677,188.75/19,671.20
  6. Step 6: Final answer
    x = 17,267.74

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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.