Home / 30,123.84-45,142.72-13,236.64

Finding the Fourth Proportional to 30,123.84, 45,142.72 and 13,236.64

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Solution

The fourth proportional to 30,123.84, 45,142.72 and 13,236.64 is: 19,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.84 : 45,142.72 = 13,236.64 : x
  2. Step 2: Convert to fraction form
    30,123.84/45,142.72 = 13,236.64/x
  3. Step 3: Cross multiply
    30,123.84x = 45,142.72 × 13,236.64
  4. Step 4: Simplify right side
    30,123.84x = 597,537,933.26
  5. Step 5: Solve for x
    x = 597,537,933.26/30,123.84
  6. Step 6: Final answer
    x = 19,836.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.