Home / 28,010.75-38,655.66-15,436.31

Finding the Fourth Proportional to 28,010.75, 38,655.66 and 15,436.31

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Solution

The fourth proportional to 28,010.75, 38,655.66 and 15,436.31 is: 21,302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.75 : 38,655.66 = 15,436.31 : x
  2. Step 2: Convert to fraction form
    28,010.75/38,655.66 = 15,436.31/x
  3. Step 3: Cross multiply
    28,010.75x = 38,655.66 × 15,436.31
  4. Step 4: Simplify right side
    28,010.75x = 596,700,751.01
  5. Step 5: Solve for x
    x = 596,700,751.01/28,010.75
  6. Step 6: Final answer
    x = 21,302.56

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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.