Home / 30,679.04-42,351.34-23,128.44

Finding the Fourth Proportional to 30,679.04, 42,351.34 and 23,128.44

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Solution

The fourth proportional to 30,679.04, 42,351.34 and 23,128.44 is: 31,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.04 : 42,351.34 = 23,128.44 : x
  2. Step 2: Convert to fraction form
    30,679.04/42,351.34 = 23,128.44/x
  3. Step 3: Cross multiply
    30,679.04x = 42,351.34 × 23,128.44
  4. Step 4: Simplify right side
    30,679.04x = 979,520,426.11
  5. Step 5: Solve for x
    x = 979,520,426.11/30,679.04
  6. Step 6: Final answer
    x = 31,928.00

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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.