Home / 30,529.08-42,130.54-19,912.62

Finding the Fourth Proportional to 30,529.08, 42,130.54 and 19,912.62

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Solution

The fourth proportional to 30,529.08, 42,130.54 and 19,912.62 is: 27,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,529.08 : 42,130.54 = 19,912.62 : x
  2. Step 2: Convert to fraction form
    30,529.08/42,130.54 = 19,912.62/x
  3. Step 3: Cross multiply
    30,529.08x = 42,130.54 × 19,912.62
  4. Step 4: Simplify right side
    30,529.08x = 838,929,433.41
  5. Step 5: Solve for x
    x = 838,929,433.41/30,529.08
  6. Step 6: Final answer
    x = 27,479.68

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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.