Home / 30,518.04-42,114.30-16,905.72

Finding the Fourth Proportional to 30,518.04, 42,114.30 and 16,905.72

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Solution

The fourth proportional to 30,518.04, 42,114.30 and 16,905.72 is: 23,329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,518.04 : 42,114.30 = 16,905.72 : x
  2. Step 2: Convert to fraction form
    30,518.04/42,114.30 = 16,905.72/x
  3. Step 3: Cross multiply
    30,518.04x = 42,114.30 × 16,905.72
  4. Step 4: Simplify right side
    30,518.04x = 711,972,563.80
  5. Step 5: Solve for x
    x = 711,972,563.80/30,518.04
  6. Step 6: Final answer
    x = 23,329.56

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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.