Home / 28,427.31-39,245.54-19,955.43

Finding the Fourth Proportional to 28,427.31, 39,245.54 and 19,955.43

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Solution

The fourth proportional to 28,427.31, 39,245.54 and 19,955.43 is: 27,549.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.31 : 39,245.54 = 19,955.43 : x
  2. Step 2: Convert to fraction form
    28,427.31/39,245.54 = 19,955.43/x
  3. Step 3: Cross multiply
    28,427.31x = 39,245.54 × 19,955.43
  4. Step 4: Simplify right side
    28,427.31x = 783,161,526.51
  5. Step 5: Solve for x
    x = 783,161,526.51/28,427.31
  6. Step 6: Final answer
    x = 27,549.62

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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.