Home / 15,412.15-21,268.69-8,338.51

Finding the Fourth Proportional to 15,412.15, 21,268.69 and 8,338.51

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Solution

The fourth proportional to 15,412.15, 21,268.69 and 8,338.51 is: 11,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.15 : 21,268.69 = 8,338.51 : x
  2. Step 2: Convert to fraction form
    15,412.15/21,268.69 = 8,338.51/x
  3. Step 3: Cross multiply
    15,412.15x = 21,268.69 × 8,338.51
  4. Step 4: Simplify right side
    15,412.15x = 177,349,184.25
  5. Step 5: Solve for x
    x = 177,349,184.25/15,412.15
  6. Step 6: Final answer
    x = 11,507.10

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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.