Home / 21,638.08-29,855.52-14,929.60

Finding the Fourth Proportional to 21,638.08, 29,855.52 and 14,929.60

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Solution

The fourth proportional to 21,638.08, 29,855.52 and 14,929.60 is: 20,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.08 : 29,855.52 = 14,929.60 : x
  2. Step 2: Convert to fraction form
    21,638.08/29,855.52 = 14,929.60/x
  3. Step 3: Cross multiply
    21,638.08x = 29,855.52 × 14,929.60
  4. Step 4: Simplify right side
    21,638.08x = 445,730,971.39
  5. Step 5: Solve for x
    x = 445,730,971.39/21,638.08
  6. Step 6: Final answer
    x = 20,599.38

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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.