Home / 28,889.61-39,867.16-16,143.05

Finding the Fourth Proportional to 28,889.61, 39,867.16 and 16,143.05

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Solution

The fourth proportional to 28,889.61, 39,867.16 and 16,143.05 is: 22,277.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.61 : 39,867.16 = 16,143.05 : x
  2. Step 2: Convert to fraction form
    28,889.61/39,867.16 = 16,143.05/x
  3. Step 3: Cross multiply
    28,889.61x = 39,867.16 × 16,143.05
  4. Step 4: Simplify right side
    28,889.61x = 643,577,557.24
  5. Step 5: Solve for x
    x = 643,577,557.24/28,889.61
  6. Step 6: Final answer
    x = 22,277.13

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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.