Home / 15,358.62-21,194.67-8,989.59

Finding the Fourth Proportional to 15,358.62, 21,194.67 and 8,989.59

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Solution

The fourth proportional to 15,358.62, 21,194.67 and 8,989.59 is: 12,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.62 : 21,194.67 = 8,989.59 : x
  2. Step 2: Convert to fraction form
    15,358.62/21,194.67 = 8,989.59/x
  3. Step 3: Cross multiply
    15,358.62x = 21,194.67 × 8,989.59
  4. Step 4: Simplify right side
    15,358.62x = 190,531,393.49
  5. Step 5: Solve for x
    x = 190,531,393.49/15,358.62
  6. Step 6: Final answer
    x = 12,405.50

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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.