Home / 47,688.80-71,533.15-12,628.49

Finding the Fourth Proportional to 47,688.80, 71,533.15 and 12,628.49

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Solution

The fourth proportional to 47,688.80, 71,533.15 and 12,628.49 is: 18,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,688.80 : 71,533.15 = 12,628.49 : x
  2. Step 2: Convert to fraction form
    47,688.80/71,533.15 = 12,628.49/x
  3. Step 3: Cross multiply
    47,688.80x = 71,533.15 × 12,628.49
  4. Step 4: Simplify right side
    47,688.80x = 903,355,280.21
  5. Step 5: Solve for x
    x = 903,355,280.21/47,688.80
  6. Step 6: Final answer
    x = 18,942.72

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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.