Home / 10,364.30-15,534.30-5,431.40

Finding the Fourth Proportional to 10,364.30, 15,534.30 and 5,431.40

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Solution

The fourth proportional to 10,364.30, 15,534.30 and 5,431.40 is: 8,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,364.30 : 15,534.30 = 5,431.40 : x
  2. Step 2: Convert to fraction form
    10,364.30/15,534.30 = 5,431.40/x
  3. Step 3: Cross multiply
    10,364.30x = 15,534.30 × 5,431.40
  4. Step 4: Simplify right side
    10,364.30x = 84,372,997.02
  5. Step 5: Solve for x
    x = 84,372,997.02/10,364.30
  6. Step 6: Final answer
    x = 8,140.73

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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.