Home / 28,429.84-42,655.83-11,785.69

Finding the Fourth Proportional to 28,429.84, 42,655.83 and 11,785.69

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Solution

The fourth proportional to 28,429.84, 42,655.83 and 11,785.69 is: 17,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.84 : 42,655.83 = 11,785.69 : x
  2. Step 2: Convert to fraction form
    28,429.84/42,655.83 = 11,785.69/x
  3. Step 3: Cross multiply
    28,429.84x = 42,655.83 × 11,785.69
  4. Step 4: Simplify right side
    28,429.84x = 502,728,389.07
  5. Step 5: Solve for x
    x = 502,728,389.07/28,429.84
  6. Step 6: Final answer
    x = 17,683.12

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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.