Home / 18,818.91-25,970.64-10,861.57

Finding the Fourth Proportional to 18,818.91, 25,970.64 and 10,861.57

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Solution

The fourth proportional to 18,818.91, 25,970.64 and 10,861.57 is: 14,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.91 : 25,970.64 = 10,861.57 : x
  2. Step 2: Convert to fraction form
    18,818.91/25,970.64 = 10,861.57/x
  3. Step 3: Cross multiply
    18,818.91x = 25,970.64 × 10,861.57
  4. Step 4: Simplify right side
    18,818.91x = 282,081,924.30
  5. Step 5: Solve for x
    x = 282,081,924.30/18,818.91
  6. Step 6: Final answer
    x = 14,989.28

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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.