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Finding the Fourth Proportional to 12,347.50, 17,039.61 and 7,042.26

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Solution

The fourth proportional to 12,347.50, 17,039.61 and 7,042.26 is: 9,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.50 : 17,039.61 = 7,042.26 : x
  2. Step 2: Convert to fraction form
    12,347.50/17,039.61 = 7,042.26/x
  3. Step 3: Cross multiply
    12,347.50x = 17,039.61 × 7,042.26
  4. Step 4: Simplify right side
    12,347.50x = 119,997,363.92
  5. Step 5: Solve for x
    x = 119,997,363.92/12,347.50
  6. Step 6: Final answer
    x = 9,718.35

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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.