Home / 20,860.63-28,787.49-11,300.29

Finding the Fourth Proportional to 20,860.63, 28,787.49 and 11,300.29

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Solution

The fourth proportional to 20,860.63, 28,787.49 and 11,300.29 is: 15,594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.63 : 28,787.49 = 11,300.29 : x
  2. Step 2: Convert to fraction form
    20,860.63/28,787.49 = 11,300.29/x
  3. Step 3: Cross multiply
    20,860.63x = 28,787.49 × 11,300.29
  4. Step 4: Simplify right side
    20,860.63x = 325,306,913.40
  5. Step 5: Solve for x
    x = 325,306,913.40/20,860.63
  6. Step 6: Final answer
    x = 15,594.30

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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.