Home / 18,861.91-26,031.69-11,312.39

Finding the Fourth Proportional to 18,861.91, 26,031.69 and 11,312.39

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Solution

The fourth proportional to 18,861.91, 26,031.69 and 11,312.39 is: 15,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.91 : 26,031.69 = 11,312.39 : x
  2. Step 2: Convert to fraction form
    18,861.91/26,031.69 = 11,312.39/x
  3. Step 3: Cross multiply
    18,861.91x = 26,031.69 × 11,312.39
  4. Step 4: Simplify right side
    18,861.91x = 294,480,694.72
  5. Step 5: Solve for x
    x = 294,480,694.72/18,861.91
  6. Step 6: Final answer
    x = 15,612.46

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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.