Home / 15,532.44-21,438.80-9,869.92

Finding the Fourth Proportional to 15,532.44, 21,438.80 and 9,869.92

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Solution

The fourth proportional to 15,532.44, 21,438.80 and 9,869.92 is: 13,623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.44 : 21,438.80 = 9,869.92 : x
  2. Step 2: Convert to fraction form
    15,532.44/21,438.80 = 9,869.92/x
  3. Step 3: Cross multiply
    15,532.44x = 21,438.80 × 9,869.92
  4. Step 4: Simplify right side
    15,532.44x = 211,599,240.90
  5. Step 5: Solve for x
    x = 211,599,240.90/15,532.44
  6. Step 6: Final answer
    x = 13,623.05

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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.