Home / 13,730.07-18,937.48-8,695.11

Finding the Fourth Proportional to 13,730.07, 18,937.48 and 8,695.11

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Solution

The fourth proportional to 13,730.07, 18,937.48 and 8,695.11 is: 11,992.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.07 : 18,937.48 = 8,695.11 : x
  2. Step 2: Convert to fraction form
    13,730.07/18,937.48 = 8,695.11/x
  3. Step 3: Cross multiply
    13,730.07x = 18,937.48 × 8,695.11
  4. Step 4: Simplify right side
    13,730.07x = 164,663,471.72
  5. Step 5: Solve for x
    x = 164,663,471.72/13,730.07
  6. Step 6: Final answer
    x = 11,992.91

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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.