Home / 20,629.04-28,457.64-13,062.80

Finding the Fourth Proportional to 20,629.04, 28,457.64 and 13,062.80

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Solution

The fourth proportional to 20,629.04, 28,457.64 and 13,062.80 is: 18,020.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.04 : 28,457.64 = 13,062.80 : x
  2. Step 2: Convert to fraction form
    20,629.04/28,457.64 = 13,062.80/x
  3. Step 3: Cross multiply
    20,629.04x = 28,457.64 × 13,062.80
  4. Step 4: Simplify right side
    20,629.04x = 371,736,459.79
  5. Step 5: Solve for x
    x = 371,736,459.79/20,629.04
  6. Step 6: Final answer
    x = 18,020.06

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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.