Home / 20,374.55-30,564.16-18,281.72

Finding the Fourth Proportional to 20,374.55, 30,564.16 and 18,281.72

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Solution

The fourth proportional to 20,374.55, 30,564.16 and 18,281.72 is: 27,424.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.55 : 30,564.16 = 18,281.72 : x
  2. Step 2: Convert to fraction form
    20,374.55/30,564.16 = 18,281.72/x
  3. Step 3: Cross multiply
    20,374.55x = 30,564.16 × 18,281.72
  4. Step 4: Simplify right side
    20,374.55x = 558,765,216.63
  5. Step 5: Solve for x
    x = 558,765,216.63/20,374.55
  6. Step 6: Final answer
    x = 27,424.66

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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.