Home / 21,588.40-32,369.40-8,425.60

Finding the Fourth Proportional to 21,588.40, 32,369.40 and 8,425.60

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Solution

The fourth proportional to 21,588.40, 32,369.40 and 8,425.60 is: 12,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.40 : 32,369.40 = 8,425.60 : x
  2. Step 2: Convert to fraction form
    21,588.40/32,369.40 = 8,425.60/x
  3. Step 3: Cross multiply
    21,588.40x = 32,369.40 × 8,425.60
  4. Step 4: Simplify right side
    21,588.40x = 272,731,616.64
  5. Step 5: Solve for x
    x = 272,731,616.64/21,588.40
  6. Step 6: Final answer
    x = 12,633.25

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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.