Home / 30,989.73-42,764.95-16,842.57

Finding the Fourth Proportional to 30,989.73, 42,764.95 and 16,842.57

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Solution

The fourth proportional to 30,989.73, 42,764.95 and 16,842.57 is: 23,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.73 : 42,764.95 = 16,842.57 : x
  2. Step 2: Convert to fraction form
    30,989.73/42,764.95 = 16,842.57/x
  3. Step 3: Cross multiply
    30,989.73x = 42,764.95 × 16,842.57
  4. Step 4: Simplify right side
    30,989.73x = 720,271,663.92
  5. Step 5: Solve for x
    x = 720,271,663.92/30,989.73
  6. Step 6: Final answer
    x = 23,242.27

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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.