Home / 18,764.69-25,916.54-12,785.99

Finding the Fourth Proportional to 18,764.69, 25,916.54 and 12,785.99

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Solution

The fourth proportional to 18,764.69, 25,916.54 and 12,785.99 is: 17,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.69 : 25,916.54 = 12,785.99 : x
  2. Step 2: Convert to fraction form
    18,764.69/25,916.54 = 12,785.99/x
  3. Step 3: Cross multiply
    18,764.69x = 25,916.54 × 12,785.99
  4. Step 4: Simplify right side
    18,764.69x = 331,368,427.76
  5. Step 5: Solve for x
    x = 331,368,427.76/18,764.69
  6. Step 6: Final answer
    x = 17,659.15

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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.