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Finding the Fourth Proportional to 12,567.50, 18,859.89 and 4,359.50

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Solution

The fourth proportional to 12,567.50, 18,859.89 and 4,359.50 is: 6,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,567.50 : 18,859.89 = 4,359.50 : x
  2. Step 2: Convert to fraction form
    12,567.50/18,859.89 = 4,359.50/x
  3. Step 3: Cross multiply
    12,567.50x = 18,859.89 × 4,359.50
  4. Step 4: Simplify right side
    12,567.50x = 82,219,690.46
  5. Step 5: Solve for x
    x = 82,219,690.46/12,567.50
  6. Step 6: Final answer
    x = 6,542.25

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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.