Home / 28,090.20-38,772.48-16,615.74

Finding the Fourth Proportional to 28,090.20, 38,772.48 and 16,615.74

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Solution

The fourth proportional to 28,090.20, 38,772.48 and 16,615.74 is: 22,934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.20 : 38,772.48 = 16,615.74 : x
  2. Step 2: Convert to fraction form
    28,090.20/38,772.48 = 16,615.74/x
  3. Step 3: Cross multiply
    28,090.20x = 38,772.48 × 16,615.74
  4. Step 4: Simplify right side
    28,090.20x = 644,233,446.84
  5. Step 5: Solve for x
    x = 644,233,446.84/28,090.20
  6. Step 6: Final answer
    x = 22,934.46

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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.