Home / 28,465.71-39,282.48-15,719.69

Finding the Fourth Proportional to 28,465.71, 39,282.48 and 15,719.69

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Solution

The fourth proportional to 28,465.71, 39,282.48 and 15,719.69 is: 21,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.71 : 39,282.48 = 15,719.69 : x
  2. Step 2: Convert to fraction form
    28,465.71/39,282.48 = 15,719.69/x
  3. Step 3: Cross multiply
    28,465.71x = 39,282.48 × 15,719.69
  4. Step 4: Simplify right side
    28,465.71x = 617,508,211.62
  5. Step 5: Solve for x
    x = 617,508,211.62/28,465.71
  6. Step 6: Final answer
    x = 21,693.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.