Home / 13,611.60-20,417.40-10,155.60

Finding the Fourth Proportional to 13,611.60, 20,417.40 and 10,155.60

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Solution

The fourth proportional to 13,611.60, 20,417.40 and 10,155.60 is: 15,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.60 : 20,417.40 = 10,155.60 : x
  2. Step 2: Convert to fraction form
    13,611.60/20,417.40 = 10,155.60/x
  3. Step 3: Cross multiply
    13,611.60x = 20,417.40 × 10,155.60
  4. Step 4: Simplify right side
    13,611.60x = 207,350,947.44
  5. Step 5: Solve for x
    x = 207,350,947.44/13,611.60
  6. Step 6: Final answer
    x = 15,233.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.