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Finding the Fourth Proportional to 10,645.50, 14,698.35 and 8,652.90

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Solution

The fourth proportional to 10,645.50, 14,698.35 and 8,652.90 is: 11,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,645.50 : 14,698.35 = 8,652.90 : x
  2. Step 2: Convert to fraction form
    10,645.50/14,698.35 = 8,652.90/x
  3. Step 3: Cross multiply
    10,645.50x = 14,698.35 × 8,652.90
  4. Step 4: Simplify right side
    10,645.50x = 127,183,352.72
  5. Step 5: Solve for x
    x = 127,183,352.72/10,645.50
  6. Step 6: Final answer
    x = 11,947.15

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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.