Home / 15,622.40-21,557.84-8,908.31

Finding the Fourth Proportional to 15,622.40, 21,557.84 and 8,908.31

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Solution

The fourth proportional to 15,622.40, 21,557.84 and 8,908.31 is: 12,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.40 : 21,557.84 = 8,908.31 : x
  2. Step 2: Convert to fraction form
    15,622.40/21,557.84 = 8,908.31/x
  3. Step 3: Cross multiply
    15,622.40x = 21,557.84 × 8,908.31
  4. Step 4: Simplify right side
    15,622.40x = 192,043,769.32
  5. Step 5: Solve for x
    x = 192,043,769.32/15,622.40
  6. Step 6: Final answer
    x = 12,292.85

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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.