Home / 15,660.27-21,612.06-9,290.63

Finding the Fourth Proportional to 15,660.27, 21,612.06 and 9,290.63

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Solution

The fourth proportional to 15,660.27, 21,612.06 and 9,290.63 is: 12,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.27 : 21,612.06 = 9,290.63 : x
  2. Step 2: Convert to fraction form
    15,660.27/21,612.06 = 9,290.63/x
  3. Step 3: Cross multiply
    15,660.27x = 21,612.06 × 9,290.63
  4. Step 4: Simplify right side
    15,660.27x = 200,789,707.03
  5. Step 5: Solve for x
    x = 200,789,707.03/15,660.27
  6. Step 6: Final answer
    x = 12,821.60

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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.