Home / 22,111.40-30,461.84-15,385.46

Finding the Fourth Proportional to 22,111.40, 30,461.84 and 15,385.46

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Solution

The fourth proportional to 22,111.40, 30,461.84 and 15,385.46 is: 21,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,111.40 : 30,461.84 = 15,385.46 : x
  2. Step 2: Convert to fraction form
    22,111.40/30,461.84 = 15,385.46/x
  3. Step 3: Cross multiply
    22,111.40x = 30,461.84 × 15,385.46
  4. Step 4: Simplify right side
    22,111.40x = 468,669,343.92
  5. Step 5: Solve for x
    x = 468,669,343.92/22,111.40
  6. Step 6: Final answer
    x = 21,195.82

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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.