Home / 21,214.89-29,277.18-12,261.60

Finding the Fourth Proportional to 21,214.89, 29,277.18 and 12,261.60

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Solution

The fourth proportional to 21,214.89, 29,277.18 and 12,261.60 is: 16,921.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.89 : 29,277.18 = 12,261.60 : x
  2. Step 2: Convert to fraction form
    21,214.89/29,277.18 = 12,261.60/x
  3. Step 3: Cross multiply
    21,214.89x = 29,277.18 × 12,261.60
  4. Step 4: Simplify right side
    21,214.89x = 358,985,070.29
  5. Step 5: Solve for x
    x = 358,985,070.29/21,214.89
  6. Step 6: Final answer
    x = 16,921.37

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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.