Home / 21,608.28-32,416.80-9,128.34

Finding the Fourth Proportional to 21,608.28, 32,416.80 and 9,128.34

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Solution

The fourth proportional to 21,608.28, 32,416.80 and 9,128.34 is: 13,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.28 : 32,416.80 = 9,128.34 : x
  2. Step 2: Convert to fraction form
    21,608.28/32,416.80 = 9,128.34/x
  3. Step 3: Cross multiply
    21,608.28x = 32,416.80 × 9,128.34
  4. Step 4: Simplify right side
    21,608.28x = 295,911,572.11
  5. Step 5: Solve for x
    x = 295,911,572.11/21,608.28
  6. Step 6: Final answer
    x = 13,694.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.