Home / 20,888.28-28,829.52-13,814.55

Finding the Fourth Proportional to 20,888.28, 28,829.52 and 13,814.55

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Solution

The fourth proportional to 20,888.28, 28,829.52 and 13,814.55 is: 19,066.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.28 : 28,829.52 = 13,814.55 : x
  2. Step 2: Convert to fraction form
    20,888.28/28,829.52 = 13,814.55/x
  3. Step 3: Cross multiply
    20,888.28x = 28,829.52 × 13,814.55
  4. Step 4: Simplify right side
    20,888.28x = 398,266,845.52
  5. Step 5: Solve for x
    x = 398,266,845.52/20,888.28
  6. Step 6: Final answer
    x = 19,066.52

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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.