Home / 13,785.99-19,025.65-7,818.18

Finding the Fourth Proportional to 13,785.99, 19,025.65 and 7,818.18

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Solution

The fourth proportional to 13,785.99, 19,025.65 and 7,818.18 is: 10,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.99 : 19,025.65 = 7,818.18 : x
  2. Step 2: Convert to fraction form
    13,785.99/19,025.65 = 7,818.18/x
  3. Step 3: Cross multiply
    13,785.99x = 19,025.65 × 7,818.18
  4. Step 4: Simplify right side
    13,785.99x = 148,745,956.32
  5. Step 5: Solve for x
    x = 148,745,956.32/13,785.99
  6. Step 6: Final answer
    x = 10,789.65

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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.