Home / 28,889.69-39,867.28-16,143.05

Finding the Fourth Proportional to 28,889.69, 39,867.28 and 16,143.05

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Solution

The fourth proportional to 28,889.69, 39,867.28 and 16,143.05 is: 22,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.69 : 39,867.28 = 16,143.05 : x
  2. Step 2: Convert to fraction form
    28,889.69/39,867.28 = 16,143.05/x
  3. Step 3: Cross multiply
    28,889.69x = 39,867.28 × 16,143.05
  4. Step 4: Simplify right side
    28,889.69x = 643,579,553.71
  5. Step 5: Solve for x
    x = 643,579,553.71/28,889.69
  6. Step 6: Final answer
    x = 22,277.14

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1.5x scale

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.