Home / 19,320.12-28,938.51-13,045.68

Finding the Fourth Proportional to 19,320.12, 28,938.51 and 13,045.68

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Solution

The fourth proportional to 19,320.12, 28,938.51 and 13,045.68 is: 19,540.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.12 : 28,938.51 = 13,045.68 : x
  2. Step 2: Convert to fraction form
    19,320.12/28,938.51 = 13,045.68/x
  3. Step 3: Cross multiply
    19,320.12x = 28,938.51 × 13,045.68
  4. Step 4: Simplify right side
    19,320.12x = 377,522,541.14
  5. Step 5: Solve for x
    x = 377,522,541.14/19,320.12
  6. Step 6: Final answer
    x = 19,540.38

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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.