Home / 20,700.93-28,586.26-13,149.69

Finding the Fourth Proportional to 20,700.93, 28,586.26 and 13,149.69

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Solution

The fourth proportional to 20,700.93, 28,586.26 and 13,149.69 is: 18,158.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.93 : 28,586.26 = 13,149.69 : x
  2. Step 2: Convert to fraction form
    20,700.93/28,586.26 = 13,149.69/x
  3. Step 3: Cross multiply
    20,700.93x = 28,586.26 × 13,149.69
  4. Step 4: Simplify right side
    20,700.93x = 375,900,457.26
  5. Step 5: Solve for x
    x = 375,900,457.26/20,700.93
  6. Step 6: Final answer
    x = 18,158.63

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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.