Home / 10,318.40-15,477.60-10,145.60

Finding the Fourth Proportional to 10,318.40, 15,477.60 and 10,145.60

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Solution

The fourth proportional to 10,318.40, 15,477.60 and 10,145.60 is: 15,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.40 : 15,477.60 = 10,145.60 : x
  2. Step 2: Convert to fraction form
    10,318.40/15,477.60 = 10,145.60/x
  3. Step 3: Cross multiply
    10,318.40x = 15,477.60 × 10,145.60
  4. Step 4: Simplify right side
    10,318.40x = 157,029,538.56
  5. Step 5: Solve for x
    x = 157,029,538.56/10,318.40
  6. Step 6: Final answer
    x = 15,218.40

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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.