Home / 15,731.06-21,708.48-9,020.62

Finding the Fourth Proportional to 15,731.06, 21,708.48 and 9,020.62

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Solution

The fourth proportional to 15,731.06, 21,708.48 and 9,020.62 is: 12,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.06 : 21,708.48 = 9,020.62 : x
  2. Step 2: Convert to fraction form
    15,731.06/21,708.48 = 9,020.62/x
  3. Step 3: Cross multiply
    15,731.06x = 21,708.48 × 9,020.62
  4. Step 4: Simplify right side
    15,731.06x = 195,823,948.86
  5. Step 5: Solve for x
    x = 195,823,948.86/15,731.06
  6. Step 6: Final answer
    x = 12,448.24

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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.