Home / 30,438.25-42,008.76-17,012.30

Finding the Fourth Proportional to 30,438.25, 42,008.76 and 17,012.30

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Solution

The fourth proportional to 30,438.25, 42,008.76 and 17,012.30 is: 23,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.25 : 42,008.76 = 17,012.30 : x
  2. Step 2: Convert to fraction form
    30,438.25/42,008.76 = 17,012.30/x
  3. Step 3: Cross multiply
    30,438.25x = 42,008.76 × 17,012.30
  4. Step 4: Simplify right side
    30,438.25x = 714,665,639.03
  5. Step 5: Solve for x
    x = 714,665,639.03/30,438.25
  6. Step 6: Final answer
    x = 23,479.20

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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.