Home / 13,457.28-20,185.91-9,724.80

Finding the Fourth Proportional to 13,457.28, 20,185.91 and 9,724.80

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Solution

The fourth proportional to 13,457.28, 20,185.91 and 9,724.80 is: 14,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.28 : 20,185.91 = 9,724.80 : x
  2. Step 2: Convert to fraction form
    13,457.28/20,185.91 = 9,724.80/x
  3. Step 3: Cross multiply
    13,457.28x = 20,185.91 × 9,724.80
  4. Step 4: Simplify right side
    13,457.28x = 196,303,888.94
  5. Step 5: Solve for x
    x = 196,303,888.94/13,457.28
  6. Step 6: Final answer
    x = 14,587.19

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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.