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Finding the Fourth Proportional to 34,688.40, 52,037.40 and 13,624.40

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Solution

The fourth proportional to 34,688.40, 52,037.40 and 13,624.40 is: 20,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,688.40 : 52,037.40 = 13,624.40 : x
  2. Step 2: Convert to fraction form
    34,688.40/52,037.40 = 13,624.40/x
  3. Step 3: Cross multiply
    34,688.40x = 52,037.40 × 13,624.40
  4. Step 4: Simplify right side
    34,688.40x = 708,978,352.56
  5. Step 5: Solve for x
    x = 708,978,352.56/34,688.40
  6. Step 6: Final answer
    x = 20,438.49

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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.