Home / 21,965.45-30,312.83-12,534.89

Finding the Fourth Proportional to 21,965.45, 30,312.83 and 12,534.89

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Solution

The fourth proportional to 21,965.45, 30,312.83 and 12,534.89 is: 17,298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.45 : 30,312.83 = 12,534.89 : x
  2. Step 2: Convert to fraction form
    21,965.45/30,312.83 = 12,534.89/x
  3. Step 3: Cross multiply
    21,965.45x = 30,312.83 × 12,534.89
  4. Step 4: Simplify right side
    21,965.45x = 379,967,869.41
  5. Step 5: Solve for x
    x = 379,967,869.41/21,965.45
  6. Step 6: Final answer
    x = 17,298.44

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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.