Home / 21,225.36-31,844.40-8,568.60

Finding the Fourth Proportional to 21,225.36, 31,844.40 and 8,568.60

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Solution

The fourth proportional to 21,225.36, 31,844.40 and 8,568.60 is: 12,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.36 : 31,844.40 = 8,568.60 : x
  2. Step 2: Convert to fraction form
    21,225.36/31,844.40 = 8,568.60/x
  3. Step 3: Cross multiply
    21,225.36x = 31,844.40 × 8,568.60
  4. Step 4: Simplify right side
    21,225.36x = 272,861,925.84
  5. Step 5: Solve for x
    x = 272,861,925.84/21,225.36
  6. Step 6: Final answer
    x = 12,855.47

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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.