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Finding the Fourth Proportional to 13,005.61, 17,947.61 and 7,037.15

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Solution

The fourth proportional to 13,005.61, 17,947.61 and 7,037.15 is: 9,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.61 : 17,947.61 = 7,037.15 : x
  2. Step 2: Convert to fraction form
    13,005.61/17,947.61 = 7,037.15/x
  3. Step 3: Cross multiply
    13,005.61x = 17,947.61 × 7,037.15
  4. Step 4: Simplify right side
    13,005.61x = 126,299,933.97
  5. Step 5: Solve for x
    x = 126,299,933.97/13,005.61
  6. Step 6: Final answer
    x = 9,711.19

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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.