Home / 10,325.70-14,254.65-8,640.90

Finding the Fourth Proportional to 10,325.70, 14,254.65 and 8,640.90

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Solution

The fourth proportional to 10,325.70, 14,254.65 and 8,640.90 is: 11,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,325.70 : 14,254.65 = 8,640.90 : x
  2. Step 2: Convert to fraction form
    10,325.70/14,254.65 = 8,640.90/x
  3. Step 3: Cross multiply
    10,325.70x = 14,254.65 × 8,640.90
  4. Step 4: Simplify right side
    10,325.70x = 123,173,005.19
  5. Step 5: Solve for x
    x = 123,173,005.19/10,325.70
  6. Step 6: Final answer
    x = 11,928.78

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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.