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Finding the Fourth Proportional to 38,720.80, 58,102.80 and 16,530.40

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Solution

The fourth proportional to 38,720.80, 58,102.80 and 16,530.40 is: 24,804.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720.80 : 58,102.80 = 16,530.40 : x
  2. Step 2: Convert to fraction form
    38,720.80/58,102.80 = 16,530.40/x
  3. Step 3: Cross multiply
    38,720.80x = 58,102.80 × 16,530.40
  4. Step 4: Simplify right side
    38,720.80x = 960,462,525.12
  5. Step 5: Solve for x
    x = 960,462,525.12/38,720.80
  6. Step 6: Final answer
    x = 24,804.82

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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.