Home / 15,447.15-21,317.09-8,373.51

Finding the Fourth Proportional to 15,447.15, 21,317.09 and 8,373.51

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Solution

The fourth proportional to 15,447.15, 21,317.09 and 8,373.51 is: 11,555.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.15 : 21,317.09 = 8,373.51 : x
  2. Step 2: Convert to fraction form
    15,447.15/21,317.09 = 8,373.51/x
  3. Step 3: Cross multiply
    15,447.15x = 21,317.09 × 8,373.51
  4. Step 4: Simplify right side
    15,447.15x = 178,498,824.42
  5. Step 5: Solve for x
    x = 178,498,824.42/15,447.15
  6. Step 6: Final answer
    x = 11,555.45

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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.