Home / 30,765.94-42,457.01-16,618.79

Finding the Fourth Proportional to 30,765.94, 42,457.01 and 16,618.79

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Solution

The fourth proportional to 30,765.94, 42,457.01 and 16,618.79 is: 22,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.94 : 42,457.01 = 16,618.79 : x
  2. Step 2: Convert to fraction form
    30,765.94/42,457.01 = 16,618.79/x
  3. Step 3: Cross multiply
    30,765.94x = 42,457.01 × 16,618.79
  4. Step 4: Simplify right side
    30,765.94x = 705,583,962.48
  5. Step 5: Solve for x
    x = 705,583,962.48/30,765.94
  6. Step 6: Final answer
    x = 22,933.93

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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.