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Finding the Fourth Proportional to 55,010.40, 82,515.60 and 13,457.40

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Solution

The fourth proportional to 55,010.40, 82,515.60 and 13,457.40 is: 20,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,010.40 : 82,515.60 = 13,457.40 : x
  2. Step 2: Convert to fraction form
    55,010.40/82,515.60 = 13,457.40/x
  3. Step 3: Cross multiply
    55,010.40x = 82,515.60 × 13,457.40
  4. Step 4: Simplify right side
    55,010.40x = 1,110,445,435.44
  5. Step 5: Solve for x
    x = 1,110,445,435.44/55,010.40
  6. Step 6: Final answer
    x = 20,186.10

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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.