Home / 13,457.12-18,570.72-7,489.16

Finding the Fourth Proportional to 13,457.12, 18,570.72 and 7,489.16

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Solution

The fourth proportional to 13,457.12, 18,570.72 and 7,489.16 is: 10,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.12 : 18,570.72 = 7,489.16 : x
  2. Step 2: Convert to fraction form
    13,457.12/18,570.72 = 7,489.16/x
  3. Step 3: Cross multiply
    13,457.12x = 18,570.72 × 7,489.16
  4. Step 4: Simplify right side
    13,457.12x = 139,079,093.40
  5. Step 5: Solve for x
    x = 139,079,093.40/13,457.12
  6. Step 6: Final answer
    x = 10,334.98

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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.