Home / 13,985.28-19,299.24-7,697.64

Finding the Fourth Proportional to 13,985.28, 19,299.24 and 7,697.64

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Solution

The fourth proportional to 13,985.28, 19,299.24 and 7,697.64 is: 10,622.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.28 : 19,299.24 = 7,697.64 : x
  2. Step 2: Convert to fraction form
    13,985.28/19,299.24 = 7,697.64/x
  3. Step 3: Cross multiply
    13,985.28x = 19,299.24 × 7,697.64
  4. Step 4: Simplify right side
    13,985.28x = 148,558,601.79
  5. Step 5: Solve for x
    x = 148,558,601.79/13,985.28
  6. Step 6: Final answer
    x = 10,622.50

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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.