Home / 19,813.79-27,342.88-10,861.29

Finding the Fourth Proportional to 19,813.79, 27,342.88 and 10,861.29

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Solution

The fourth proportional to 19,813.79, 27,342.88 and 10,861.29 is: 14,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.79 : 27,342.88 = 10,861.29 : x
  2. Step 2: Convert to fraction form
    19,813.79/27,342.88 = 10,861.29/x
  3. Step 3: Cross multiply
    19,813.79x = 27,342.88 × 10,861.29
  4. Step 4: Simplify right side
    19,813.79x = 296,978,921.96
  5. Step 5: Solve for x
    x = 296,978,921.96/19,813.79
  6. Step 6: Final answer
    x = 14,988.49

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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.