Home / 30,123.36-45,185.49-7,938.98

Finding the Fourth Proportional to 30,123.36, 45,185.49 and 7,938.98

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Solution

The fourth proportional to 30,123.36, 45,185.49 and 7,938.98 is: 11,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.36 : 45,185.49 = 7,938.98 : x
  2. Step 2: Convert to fraction form
    30,123.36/45,185.49 = 7,938.98/x
  3. Step 3: Cross multiply
    30,123.36x = 45,185.49 × 7,938.98
  4. Step 4: Simplify right side
    30,123.36x = 358,726,475.47
  5. Step 5: Solve for x
    x = 358,726,475.47/30,123.36
  6. Step 6: Final answer
    x = 11,908.58

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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.