Home / 30,123.84-45,186.36-21,202.68

Finding the Fourth Proportional to 30,123.84, 45,186.36 and 21,202.68

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Solution

The fourth proportional to 30,123.84, 45,186.36 and 21,202.68 is: 31,804.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.84 : 45,186.36 = 21,202.68 : x
  2. Step 2: Convert to fraction form
    30,123.84/45,186.36 = 21,202.68/x
  3. Step 3: Cross multiply
    30,123.84x = 45,186.36 × 21,202.68
  4. Step 4: Simplify right side
    30,123.84x = 958,071,931.44
  5. Step 5: Solve for x
    x = 958,071,931.44/30,123.84
  6. Step 6: Final answer
    x = 31,804.44

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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.