Home / 21,263.11-29,349.54-12,312.81

Finding the Fourth Proportional to 21,263.11, 29,349.54 and 12,312.81

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Solution

The fourth proportional to 21,263.11, 29,349.54 and 12,312.81 is: 16,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.11 : 29,349.54 = 12,312.81 : x
  2. Step 2: Convert to fraction form
    21,263.11/29,349.54 = 12,312.81/x
  3. Step 3: Cross multiply
    21,263.11x = 29,349.54 × 12,312.81
  4. Step 4: Simplify right side
    21,263.11x = 361,375,309.61
  5. Step 5: Solve for x
    x = 361,375,309.61/21,263.11
  6. Step 6: Final answer
    x = 16,995.41

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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.