Home / 19,730.19-27,235.23-12,177.75

Finding the Fourth Proportional to 19,730.19, 27,235.23 and 12,177.75

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Solution

The fourth proportional to 19,730.19, 27,235.23 and 12,177.75 is: 16,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.19 : 27,235.23 = 12,177.75 : x
  2. Step 2: Convert to fraction form
    19,730.19/27,235.23 = 12,177.75/x
  3. Step 3: Cross multiply
    19,730.19x = 27,235.23 × 12,177.75
  4. Step 4: Simplify right side
    19,730.19x = 331,663,822.13
  5. Step 5: Solve for x
    x = 331,663,822.13/19,730.19
  6. Step 6: Final answer
    x = 16,809.97

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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.