Home / 47,688.90-71,534.72-12,628.59

Finding the Fourth Proportional to 47,688.90, 71,534.72 and 12,628.59

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Solution

The fourth proportional to 47,688.90, 71,534.72 and 12,628.59 is: 18,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,688.90 : 71,534.72 = 12,628.59 : x
  2. Step 2: Convert to fraction form
    47,688.90/71,534.72 = 12,628.59/x
  3. Step 3: Cross multiply
    47,688.90x = 71,534.72 × 12,628.59
  4. Step 4: Simplify right side
    47,688.90x = 903,382,649.64
  5. Step 5: Solve for x
    x = 903,382,649.64/47,688.90
  6. Step 6: Final answer
    x = 18,943.25

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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.