Home / 20,562.03-28,431.54-20,228.58

Finding the Fourth Proportional to 20,562.03, 28,431.54 and 20,228.58

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Solution

The fourth proportional to 20,562.03, 28,431.54 and 20,228.58 is: 27,970.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.03 : 28,431.54 = 20,228.58 : x
  2. Step 2: Convert to fraction form
    20,562.03/28,431.54 = 20,228.58/x
  3. Step 3: Cross multiply
    20,562.03x = 28,431.54 × 20,228.58
  4. Step 4: Simplify right side
    20,562.03x = 575,129,681.41
  5. Step 5: Solve for x
    x = 575,129,681.41/20,562.03
  6. Step 6: Final answer
    x = 27,970.47

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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.