Home / 19,605.64-27,040.14-12,898.20

Finding the Fourth Proportional to 19,605.64, 27,040.14 and 12,898.20

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Solution

The fourth proportional to 19,605.64, 27,040.14 and 12,898.20 is: 17,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.64 : 27,040.14 = 12,898.20 : x
  2. Step 2: Convert to fraction form
    19,605.64/27,040.14 = 12,898.20/x
  3. Step 3: Cross multiply
    19,605.64x = 27,040.14 × 12,898.20
  4. Step 4: Simplify right side
    19,605.64x = 348,769,133.75
  5. Step 5: Solve for x
    x = 348,769,133.75/19,605.64
  6. Step 6: Final answer
    x = 17,789.22

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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.