Home / 21,263.28-29,341.56-12,311.34

Finding the Fourth Proportional to 21,263.28, 29,341.56 and 12,311.34

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Solution

The fourth proportional to 21,263.28, 29,341.56 and 12,311.34 is: 16,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.28 : 29,341.56 = 12,311.34 : x
  2. Step 2: Convert to fraction form
    21,263.28/29,341.56 = 12,311.34/x
  3. Step 3: Cross multiply
    21,263.28x = 29,341.56 × 12,311.34
  4. Step 4: Simplify right side
    21,263.28x = 361,233,921.29
  5. Step 5: Solve for x
    x = 361,233,921.29/21,263.28
  6. Step 6: Final answer
    x = 16,988.63

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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.