Home / 21,557.68-32,336.48-8,419.28

Finding the Fourth Proportional to 21,557.68, 32,336.48 and 8,419.28

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Solution

The fourth proportional to 21,557.68, 32,336.48 and 8,419.28 is: 12,628.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.68 : 32,336.48 = 8,419.28 : x
  2. Step 2: Convert to fraction form
    21,557.68/32,336.48 = 8,419.28/x
  3. Step 3: Cross multiply
    21,557.68x = 32,336.48 × 8,419.28
  4. Step 4: Simplify right side
    21,557.68x = 272,249,879.33
  5. Step 5: Solve for x
    x = 272,249,879.33/21,557.68
  6. Step 6: Final answer
    x = 12,628.90

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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.