Home / 21,656.62-29,885.90-12,225.58

Finding the Fourth Proportional to 21,656.62, 29,885.90 and 12,225.58

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Solution

The fourth proportional to 21,656.62, 29,885.90 and 12,225.58 is: 16,871.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.62 : 29,885.90 = 12,225.58 : x
  2. Step 2: Convert to fraction form
    21,656.62/29,885.90 = 12,225.58/x
  3. Step 3: Cross multiply
    21,656.62x = 29,885.90 × 12,225.58
  4. Step 4: Simplify right side
    21,656.62x = 365,372,461.32
  5. Step 5: Solve for x
    x = 365,372,461.32/21,656.62
  6. Step 6: Final answer
    x = 16,871.17

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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.