Home / 15,860.12-21,886.66-9,145.32

Finding the Fourth Proportional to 15,860.12, 21,886.66 and 9,145.32

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Solution

The fourth proportional to 15,860.12, 21,886.66 and 9,145.32 is: 12,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.12 : 21,886.66 = 9,145.32 : x
  2. Step 2: Convert to fraction form
    15,860.12/21,886.66 = 9,145.32/x
  3. Step 3: Cross multiply
    15,860.12x = 21,886.66 × 9,145.32
  4. Step 4: Simplify right side
    15,860.12x = 200,160,509.43
  5. Step 5: Solve for x
    x = 200,160,509.43/15,860.12
  6. Step 6: Final answer
    x = 12,620.37

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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.