Home / 13,642.60-20,457.18-4,407.40

Finding the Fourth Proportional to 13,642.60, 20,457.18 and 4,407.40

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Solution

The fourth proportional to 13,642.60, 20,457.18 and 4,407.40 is: 6,608.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.60 : 20,457.18 = 4,407.40 : x
  2. Step 2: Convert to fraction form
    13,642.60/20,457.18 = 4,407.40/x
  3. Step 3: Cross multiply
    13,642.60x = 20,457.18 × 4,407.40
  4. Step 4: Simplify right side
    13,642.60x = 90,162,975.13
  5. Step 5: Solve for x
    x = 90,162,975.13/13,642.60
  6. Step 6: Final answer
    x = 6,608.93

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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.