Home / 30,520.15-42,114.12-17,090.35

Finding the Fourth Proportional to 30,520.15, 42,114.12 and 17,090.35

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Solution

The fourth proportional to 30,520.15, 42,114.12 and 17,090.35 is: 23,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.15 : 42,114.12 = 17,090.35 : x
  2. Step 2: Convert to fraction form
    30,520.15/42,114.12 = 17,090.35/x
  3. Step 3: Cross multiply
    30,520.15x = 42,114.12 × 17,090.35
  4. Step 4: Simplify right side
    30,520.15x = 719,745,050.74
  5. Step 5: Solve for x
    x = 719,745,050.74/30,520.15
  6. Step 6: Final answer
    x = 23,582.62

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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.