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Finding the Fourth Proportional to 13,005.86, 17,947.95 and 7,037.40

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Solution

The fourth proportional to 13,005.86, 17,947.95 and 7,037.40 is: 9,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.86 : 17,947.95 = 7,037.40 : x
  2. Step 2: Convert to fraction form
    13,005.86/17,947.95 = 7,037.40/x
  3. Step 3: Cross multiply
    13,005.86x = 17,947.95 × 7,037.40
  4. Step 4: Simplify right side
    13,005.86x = 126,306,903.33
  5. Step 5: Solve for x
    x = 126,306,903.33/13,005.86
  6. Step 6: Final answer
    x = 9,711.54

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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.