Home / 28,889.61-39,867.15-16,143.06

Finding the Fourth Proportional to 28,889.61, 39,867.15 and 16,143.06

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Solution

The fourth proportional to 28,889.61, 39,867.15 and 16,143.06 is: 22,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.61 : 39,867.15 = 16,143.06 : x
  2. Step 2: Convert to fraction form
    28,889.61/39,867.15 = 16,143.06/x
  3. Step 3: Cross multiply
    28,889.61x = 39,867.15 × 16,143.06
  4. Step 4: Simplify right side
    28,889.61x = 643,577,794.48
  5. Step 5: Solve for x
    x = 643,577,794.48/28,889.61
  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.