Home / 21,588.40-29,794.02-12,635.36

Finding the Fourth Proportional to 21,588.40, 29,794.02 and 12,635.36

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Solution

The fourth proportional to 21,588.40, 29,794.02 and 12,635.36 is: 17,437.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.40 : 29,794.02 = 12,635.36 : x
  2. Step 2: Convert to fraction form
    21,588.40/29,794.02 = 12,635.36/x
  3. Step 3: Cross multiply
    21,588.40x = 29,794.02 × 12,635.36
  4. Step 4: Simplify right side
    21,588.40x = 376,458,168.55
  5. Step 5: Solve for x
    x = 376,458,168.55/21,588.40
  6. Step 6: Final answer
    x = 17,437.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.