Home / 42,364.70-63,505.72-20,172.11

Finding the Fourth Proportional to 42,364.70, 63,505.72 and 20,172.11

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Solution

The fourth proportional to 42,364.70, 63,505.72 and 20,172.11 is: 30,238.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,364.70 : 63,505.72 = 20,172.11 : x
  2. Step 2: Convert to fraction form
    42,364.70/63,505.72 = 20,172.11/x
  3. Step 3: Cross multiply
    42,364.70x = 63,505.72 × 20,172.11
  4. Step 4: Simplify right side
    42,364.70x = 1,281,044,369.47
  5. Step 5: Solve for x
    x = 1,281,044,369.47/42,364.70
  6. Step 6: Final answer
    x = 30,238.49

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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.