Home / 13,457.15-18,570.93-7,489.18

Finding the Fourth Proportional to 13,457.15, 18,570.93 and 7,489.18

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Solution

The fourth proportional to 13,457.15, 18,570.93 and 7,489.18 is: 10,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.15 : 18,570.93 = 7,489.18 : x
  2. Step 2: Convert to fraction form
    13,457.15/18,570.93 = 7,489.18/x
  3. Step 3: Cross multiply
    13,457.15x = 18,570.93 × 7,489.18
  4. Step 4: Simplify right side
    13,457.15x = 139,081,137.56
  5. Step 5: Solve for x
    x = 139,081,137.56/13,457.15
  6. Step 6: Final answer
    x = 10,335.11

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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.