Home / 30,462.55-42,048.91-20,933.99

Finding the Fourth Proportional to 30,462.55, 42,048.91 and 20,933.99

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Solution

The fourth proportional to 30,462.55, 42,048.91 and 20,933.99 is: 28,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,462.55 : 42,048.91 = 20,933.99 : x
  2. Step 2: Convert to fraction form
    30,462.55/42,048.91 = 20,933.99/x
  3. Step 3: Cross multiply
    30,462.55x = 42,048.91 × 20,933.99
  4. Step 4: Simplify right side
    30,462.55x = 880,251,356.78
  5. Step 5: Solve for x
    x = 880,251,356.78/30,462.55
  6. Step 6: Final answer
    x = 28,896.18

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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.