Home / 30,620.29-42,254.62-17,191.30

Finding the Fourth Proportional to 30,620.29, 42,254.62 and 17,191.30

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Solution

The fourth proportional to 30,620.29, 42,254.62 and 17,191.30 is: 23,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.29 : 42,254.62 = 17,191.30 : x
  2. Step 2: Convert to fraction form
    30,620.29/42,254.62 = 17,191.30/x
  3. Step 3: Cross multiply
    30,620.29x = 42,254.62 × 17,191.30
  4. Step 4: Simplify right side
    30,620.29x = 726,411,848.81
  5. Step 5: Solve for x
    x = 726,411,848.81/30,620.29
  6. Step 6: Final answer
    x = 23,723.22

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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.