Home / 21,719.36-32,588.76-12,485.36

Finding the Fourth Proportional to 21,719.36, 32,588.76 and 12,485.36

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Solution

The fourth proportional to 21,719.36, 32,588.76 and 12,485.36 is: 18,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.36 : 32,588.76 = 12,485.36 : x
  2. Step 2: Convert to fraction form
    21,719.36/32,588.76 = 12,485.36/x
  3. Step 3: Cross multiply
    21,719.36x = 32,588.76 × 12,485.36
  4. Step 4: Simplify right side
    21,719.36x = 406,882,400.55
  5. Step 5: Solve for x
    x = 406,882,400.55/21,719.36
  6. Step 6: Final answer
    x = 18,733.63

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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.