Home / 15,660.53-21,611.70-8,947.05

Finding the Fourth Proportional to 15,660.53, 21,611.70 and 8,947.05

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Solution

The fourth proportional to 15,660.53, 21,611.70 and 8,947.05 is: 12,347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.53 : 21,611.70 = 8,947.05 : x
  2. Step 2: Convert to fraction form
    15,660.53/21,611.70 = 8,947.05/x
  3. Step 3: Cross multiply
    15,660.53x = 21,611.70 × 8,947.05
  4. Step 4: Simplify right side
    15,660.53x = 193,360,960.49
  5. Step 5: Solve for x
    x = 193,360,960.49/15,660.53
  6. Step 6: Final answer
    x = 12,347.03

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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.