Home / 30,588.71-45,899.79-11,869.49

Finding the Fourth Proportional to 30,588.71, 45,899.79 and 11,869.49

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Solution

The fourth proportional to 30,588.71, 45,899.79 and 11,869.49 is: 17,810.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,588.71 : 45,899.79 = 11,869.49 : x
  2. Step 2: Convert to fraction form
    30,588.71/45,899.79 = 11,869.49/x
  3. Step 3: Cross multiply
    30,588.71x = 45,899.79 × 11,869.49
  4. Step 4: Simplify right side
    30,588.71x = 544,806,868.91
  5. Step 5: Solve for x
    x = 544,806,868.91/30,588.71
  6. Step 6: Final answer
    x = 17,810.72

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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.