Home / 47,640.32-71,459.26-12,580.28

Finding the Fourth Proportional to 47,640.32, 71,459.26 and 12,580.28

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Solution

The fourth proportional to 47,640.32, 71,459.26 and 12,580.28 is: 18,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,640.32 : 71,459.26 = 12,580.28 : x
  2. Step 2: Convert to fraction form
    47,640.32/71,459.26 = 12,580.28/x
  3. Step 3: Cross multiply
    47,640.32x = 71,459.26 × 12,580.28
  4. Step 4: Simplify right side
    47,640.32x = 898,977,499.39
  5. Step 5: Solve for x
    x = 898,977,499.39/47,640.32
  6. Step 6: Final answer
    x = 18,870.10

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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.