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Finding the Fourth Proportional to 8,995.32, 13,501.62 and 8,429.40

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Solution

The fourth proportional to 8,995.32, 13,501.62 and 8,429.40 is: 12,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.32 : 13,501.62 = 8,429.40 : x
  2. Step 2: Convert to fraction form
    8,995.32/13,501.62 = 8,429.40/x
  3. Step 3: Cross multiply
    8,995.32x = 13,501.62 × 8,429.40
  4. Step 4: Simplify right side
    8,995.32x = 113,810,555.63
  5. Step 5: Solve for x
    x = 113,810,555.63/8,995.32
  6. Step 6: Final answer
    x = 12,652.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.