Home / 21,328.08-32,001.36-11,455.80

Finding the Fourth Proportional to 21,328.08, 32,001.36 and 11,455.80

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Solution

The fourth proportional to 21,328.08, 32,001.36 and 11,455.80 is: 17,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.08 : 32,001.36 = 11,455.80 : x
  2. Step 2: Convert to fraction form
    21,328.08/32,001.36 = 11,455.80/x
  3. Step 3: Cross multiply
    21,328.08x = 32,001.36 × 11,455.80
  4. Step 4: Simplify right side
    21,328.08x = 366,601,179.89
  5. Step 5: Solve for x
    x = 366,601,179.89/21,328.08
  6. Step 6: Final answer
    x = 17,188.66

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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.