Home / 15,124.40-20,871.56-8,410.64

Finding the Fourth Proportional to 15,124.40, 20,871.56 and 8,410.64

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Solution

The fourth proportional to 15,124.40, 20,871.56 and 8,410.64 is: 11,606.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.40 : 20,871.56 = 8,410.64 : x
  2. Step 2: Convert to fraction form
    15,124.40/20,871.56 = 8,410.64/x
  3. Step 3: Cross multiply
    15,124.40x = 20,871.56 × 8,410.64
  4. Step 4: Simplify right side
    15,124.40x = 175,543,177.40
  5. Step 5: Solve for x
    x = 175,543,177.40/15,124.40
  6. Step 6: Final answer
    x = 11,606.62

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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.