Home / 15,707.29-21,675.69-8,537.03

Finding the Fourth Proportional to 15,707.29, 21,675.69 and 8,537.03

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Solution

The fourth proportional to 15,707.29, 21,675.69 and 8,537.03 is: 11,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.29 : 21,675.69 = 8,537.03 : x
  2. Step 2: Convert to fraction form
    15,707.29/21,675.69 = 8,537.03/x
  3. Step 3: Cross multiply
    15,707.29x = 21,675.69 × 8,537.03
  4. Step 4: Simplify right side
    15,707.29x = 185,046,015.80
  5. Step 5: Solve for x
    x = 185,046,015.80/15,707.29
  6. Step 6: Final answer
    x = 11,780.90

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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.