Home / 15,290.21-21,098.80-8,574.45

Finding the Fourth Proportional to 15,290.21, 21,098.80 and 8,574.45

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Solution

The fourth proportional to 15,290.21, 21,098.80 and 8,574.45 is: 11,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.21 : 21,098.80 = 8,574.45 : x
  2. Step 2: Convert to fraction form
    15,290.21/21,098.80 = 8,574.45/x
  3. Step 3: Cross multiply
    15,290.21x = 21,098.80 × 8,574.45
  4. Step 4: Simplify right side
    15,290.21x = 180,910,584.22
  5. Step 5: Solve for x
    x = 180,910,584.22/15,290.21
  6. Step 6: Final answer
    x = 11,831.79

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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.