Home / 28,813.68-39,772.80-16,880.88

Finding the Fourth Proportional to 28,813.68, 39,772.80 and 16,880.88

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Solution

The fourth proportional to 28,813.68, 39,772.80 and 16,880.88 is: 23,301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.68 : 39,772.80 = 16,880.88 : x
  2. Step 2: Convert to fraction form
    28,813.68/39,772.80 = 16,880.88/x
  3. Step 3: Cross multiply
    28,813.68x = 39,772.80 × 16,880.88
  4. Step 4: Simplify right side
    28,813.68x = 671,399,864.06
  5. Step 5: Solve for x
    x = 671,399,864.06/28,813.68
  6. Step 6: Final answer
    x = 23,301.43

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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.