Home / 19,885.93-27,428.78-13,508.96

Finding the Fourth Proportional to 19,885.93, 27,428.78 and 13,508.96

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Solution

The fourth proportional to 19,885.93, 27,428.78 and 13,508.96 is: 18,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.93 : 27,428.78 = 13,508.96 : x
  2. Step 2: Convert to fraction form
    19,885.93/27,428.78 = 13,508.96/x
  3. Step 3: Cross multiply
    19,885.93x = 27,428.78 × 13,508.96
  4. Step 4: Simplify right side
    19,885.93x = 370,534,188.50
  5. Step 5: Solve for x
    x = 370,534,188.50/19,885.93
  6. Step 6: Final answer
    x = 18,632.98

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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.