Home / 21,263.54-29,343.69-12,311.51

Finding the Fourth Proportional to 21,263.54, 29,343.69 and 12,311.51

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Solution

The fourth proportional to 21,263.54, 29,343.69 and 12,311.51 is: 16,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.54 : 29,343.69 = 12,311.51 : x
  2. Step 2: Convert to fraction form
    21,263.54/29,343.69 = 12,311.51/x
  3. Step 3: Cross multiply
    21,263.54x = 29,343.69 × 12,311.51
  4. Step 4: Simplify right side
    21,263.54x = 361,265,206.23
  5. Step 5: Solve for x
    x = 361,265,206.23/21,263.54
  6. Step 6: Final answer
    x = 16,989.89

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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.