Home / 30,612.76-42,234.75-20,008.51

Finding the Fourth Proportional to 30,612.76, 42,234.75 and 20,008.51

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Solution

The fourth proportional to 30,612.76, 42,234.75 and 20,008.51 is: 27,604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.76 : 42,234.75 = 20,008.51 : x
  2. Step 2: Convert to fraction form
    30,612.76/42,234.75 = 20,008.51/x
  3. Step 3: Cross multiply
    30,612.76x = 42,234.75 × 20,008.51
  4. Step 4: Simplify right side
    30,612.76x = 845,054,312.14
  5. Step 5: Solve for x
    x = 845,054,312.14/30,612.76
  6. Step 6: Final answer
    x = 27,604.65

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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.