Home / 21,541.36-32,305.80-8,390.80

Finding the Fourth Proportional to 21,541.36, 32,305.80 and 8,390.80

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Solution

The fourth proportional to 21,541.36, 32,305.80 and 8,390.80 is: 12,583.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.36 : 32,305.80 = 8,390.80 : x
  2. Step 2: Convert to fraction form
    21,541.36/32,305.80 = 8,390.80/x
  3. Step 3: Cross multiply
    21,541.36x = 32,305.80 × 8,390.80
  4. Step 4: Simplify right side
    21,541.36x = 271,071,506.64
  5. Step 5: Solve for x
    x = 271,071,506.64/21,541.36
  6. Step 6: Final answer
    x = 12,583.77

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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.