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Finding the Fourth Proportional to 12,859.40, 17,752.04 and 9,673.91

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Solution

The fourth proportional to 12,859.40, 17,752.04 and 9,673.91 is: 13,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.40 : 17,752.04 = 9,673.91 : x
  2. Step 2: Convert to fraction form
    12,859.40/17,752.04 = 9,673.91/x
  3. Step 3: Cross multiply
    12,859.40x = 17,752.04 × 9,673.91
  4. Step 4: Simplify right side
    12,859.40x = 171,731,703.87
  5. Step 5: Solve for x
    x = 171,731,703.87/12,859.40
  6. Step 6: Final answer
    x = 13,354.56

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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.